|  
            
              1 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 85-98 | 
          86-98 | 
          97-98 | 
          85-91 | 
          93-97 | 
          95-98 | 
          85-98 | 
        
         
          Oxygen Sensor "A" (Primary)  
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              2 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 85-89 | 
          86-87 | 
          n/a | 
          85-87 | 
          85-91 | 
          n/a | 
          n/a | 
        
         
          Oxygen Sensor "B"  
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              3 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 85-98 | 
          86-98 | 
          97-98 | 
          85-91 | 
          93-97 | 
          95-98 | 
          85-98 | 
        
         
          MAP Sensor (Manifold Absolute Pressure) 
             
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              4 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 90-98 | 
          88-98 | 
          97-98 | 
          88-91 | 
          93-97 | 
          95-98 | 
          85-98 | 
        
         
          CKP Sensor (Crankshaft Position Sensor)  
             
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              5 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 85-98 * | 
          86-98 | 
          97-98 | 
          85-91 | 
          93-97 | 
          96-98 | 
          85-98 | 
        
         
          MAP Sensor (Manifold Absolute Pressure) 
             
            mechanical problem / disconnected piping  
            * exc 94-95 | 
        
         
          |  
            
              6 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 85-98 | 
          86-98 | 
          97-98 | 
          85-91 | 
          93-97 | 
          95-98 | 
          85-98 | 
        
         
          ECT Sensor (Engine Coolant Temperature) 
             
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              7 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 85-98 | 
          86-98 | 
          97-98 | 
          85-91 | 
          93-97 | 
          95-98 | 
          85-98 | 
        
         
          TP Sensor (Throttle Position) 
             
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              8 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 85-98 | 
          86-98 | 
          97-98 | 
          85-91 | 
          93-97 | 
          95-98 | 
          85-98 | 
        
         
          TDC Sensor (Top Dead Center)  
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              9* 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 85-98** | 
          86-98 | 
          97-98 | 
          85-91 | 
          93-97 | 
          95-98 | 
          85-98 | 
        
         
          CYP Sensor (Cylinder)  
            defective circuit or unplugged / defective sensor  
             
            *   not a valid code for any throttle body 
            injection Hondas   
            ** not a valid code for V-6 engines | 
        
         
          |  
            
              10 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 85-98 | 
          86-98 | 
          97-98 | 
          85-91 | 
          93-97 | 
          95-98 | 
          85-98 | 
        
         
          IAT Sensor (Intake Air Temperature) 
             
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              12 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 85-98 | 
          86-98 * | 
          n/a | 
          85-91 * | 
          n/a | 
          95-98 | 
          85-98 | 
        
         
          EGR Lift Sensor (Exhaust Gas Recirculation) 
             
            defective circuit or unplugged / defective sensor  
             
            * not a valid code if car is not equipped with an EGR 
            valve (some Civic models are not) | 
        
         
          |  
            
              13 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 85-98 | 
          86-98 | 
          97-98 | 
          85-91 | 
          93-97 | 
          95-98 | 
          85-98 | 
        
         
          BARO Sensor (Atmospheric Pressure) 
             
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              14 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 88-98 | 
          88-98 | 
          97-98 | 
          88-91 | 
          93-97 | 
          95-98 | 
          88-98 | 
        
         
          IAC Valve (Idle Air Control)  
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              15 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 90-95 | 
          88-95 | 
          n/a | 
          88-91 | 
          93-95 | 
          95 | 
          88-95 | 
        
         
          Ignition Output Signal  
            missing or defective ignition output signal | 
        
         
          |  
            
              16 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 90-95 | 
          88-95 | 
          n/a | 
          88-91 | 
          93-95 | 
          95 | 
          88-95 | 
        
         
          Fuel Injector System  
            defective circuit or unplugged / defective fuel injector | 
        
         
          |  
            
              17 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 88-98 | 
          88-98 | 
          97-98 | 
          88-91 | 
          93-97 | 
          95-97 | 
          88-98 | 
        
         
          VSS (Vehicle Speed Sensor)  
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              19 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | n/a | 
          88-95 | 
          n/a | 
          88-91 | 
          93-97 | 
          n/a | 
          n/a | 
        
         
          Automatic Transmission Lock Up Control 
            Solenoid Valve  
            defective circuit or unplugged / defective solenoid 
            valve | 
        
         
          |  
            
              20 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 90-98 | 
          88-98 | 
          97-98 | 
          88-91 | 
          93-97 | 
          95-98 | 
          92-98 | 
        
         
          Electrical Load Detector  
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              21* 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 94-98 ** | 
          92-95 | 
          n/a | 
          n/a | 
          93-95 | 
          n/a | 
          93-95 | 
        
         
          VTEC Solenoid Valve  
            defective circuit or unplugged / defective solenoid 
            valve   
            *   not a valid code if car does not have 
            a VTEC engine   
            ** not with V-6 engine | 
        
         
          |  
            
              22* 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 94-98 | 
          92-98 | 
          n/a | 
          n/a | 
          93-97 | 
          98 | 
          93-98` | 
        
         
          VTEC Oil Pressure Switch   
            defective circuit or unplugged / defective oil pressure 
            switch   
            * not a valid code if car does not have a VTEC engine | 
        
         
          |  
            
              23 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 98 * | 
          96-98 | 
          n/a | 
          n/a | 
          94-97 | 
          n/a | 
          92-98 | 
        
         
          KS (Knock Sensor)  
            defective circuit or unplugged / defective sensor  
             
            * not a valid code if V-6 engine | 
        
         
          |  
            
              30 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 90-98 * | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
          95 | 
          92-98 * | 
        
         
          Automatic Transmission Signal: "A" 
            / SEAF / SEFA / TMA or TMB  
            defective circuit or unplugged / defective sensor   
- 
- 
- 
-  not a valid code for 1996
         | 
        
         
          |  
            
              31 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 90-95 | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
          95 | 
          92-95 | 
        
         
          Automatic Transmission Signal "B" 
             
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              41 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 90-98 | 
          92-98 | 
          97-98 | 
          n/a | 
          93-97 | 
          95-98 | 
          90-98 | 
        
         
          Primary Oxygen Sensor - Heater 
             
            circuit malfunction | 
        
         
          |  
            
              43 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 90-95 | 
          92-95 | 
          n/a | 
          n/a | 
          93-95 | 
          95 | 
          90-95 | 
        
         
          Fuel Supply System  
            defective or malfunctioning fuel supply system | 
        
         
          |  
            
              45 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          97-98 | 
          n/a | 
          96-97 | 
          96-98 | 
          96-98 | 
        
         
          System Too Lean or Too Rich  
            malfunction in the fuel monitoring systems | 
        
         
          |  
            
              48 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 98 | 
          92-98 | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
        
         
          LAF Sensor (Lean Air Fuel)  
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              54 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96 | 
          96-98 | 
          97-98 | 
          n/a | 
          96-97 | 
          n/a | 
          n/a | 
        
         
          CKF Sensor (Crankshaft Speed Fluctuation) 
             
            defective circuit or unplugged / defective sensor | 
        
         
          |  
            
              58 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 98 * | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
        
         
          TDC Sensor 2 (Top Dead Center) 
             
            defective circuit or unplugged / defective sensor  
             
            * with V-6 engine only | 
        
         
          |  
            
              61 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          97-98 | 
          n/a | 
          96-97 | 
          96-98 | 
          96-98 | 
        
         
          Oxygen Sensor, Heated - Sensor 1 (Primary) 
             
            high voltage, low voltage, or slow response | 
        
         
          |  
            
              63 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          97-98 | 
          n/a | 
          96-97 | 
          96-98 | 
          96-98 | 
        
         
          Oxygen Sensor, Heated - Sensor 2 (Secondary) 
             
            high voltage, low voltage, or slow response | 
        
         
          |  
            
              65 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          97-98 | 
          n/a | 
          96-97 | 
          96-98 | 
          96-98 | 
        
         
          Oxygen Sensor Heater (Secondary) 
             
            malfunctioning or defective oxygen sensor heater | 
        
         
          |  
            
              67 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          97-98 | 
          n/a | 
          96-97 | 
          96-98 | 
          96-98 | 
        
         
          Catalyst system Efficiency Below Threshold 
             
            malfunctioning or defective catalyst system | 
        
         
          |  
            
              70 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          97-98 | 
          n/a | 
          n/a | 
          96-98 | 
          96-98 | 
        
         
          Automatic Transmission  
            malfunction with the automatic transmission controls | 
        
         
          |  
            
              71 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          97-98 | 
          n/a | 
          96-97 | 
          96-98 | 
          96-98 | 
        
         
          Cylinder 1 Misfire or a Random Misfire 
             
            a condition is present that is creating a cylinder misfire | 
        
         
          |  
            
              72 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          97-98 | 
          n/a | 
          96-97 | 
          96-98 | 
          96-98 | 
        
         
          Cylinder 2 Misfire or a Random Misfire 
             
            a condition is present that is creating a cylinder misfire | 
        
         
          |  
            
              73 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          97-98 | 
          n/a | 
          96-97 | 
          96-98 | 
          96-98 | 
        
         
          Cylinder 3 Misfire or a Random Misfire 
             
            a condition is present that is creating a cylinder misfire | 
        
         
          |  
            
              74 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          97-98 | 
          n/a | 
          96-97 | 
          96-98 | 
          96-98 | 
        
         
          Cylinder 4 Misfire or a Random Misfire 
             
            a condition is present that is creating a cylinder misfire | 
        
         
          |  
            
              75 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 98 * | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
        
         
          Cylinder 5 Misfire or a Random Misfire 
             
            a condition is present that is creating a cylinder misfire  
             
            * valid code for V-6 engine only | 
        
         
          |  
            
              76 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 98 * | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
          n/a | 
        
         
          Cylinder 6 Misfire or a Random Misfire 
             
            a condition is present that is creating a cylinder misfire  
             
            * valid code for V-6 engine only | 
        
         
          |  
            
              80 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          n/a | 
          n/a | 
          n/a | 
          96-98 | 
          96-98 | 
        
         
          Exhaust Gas Recirculation  
            insufficient flow detected | 
        
         
          |  
            
              86 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          97-98 | 
          n/a | 
          96-97 | 
          96-98 | 
          96-98 | 
        
         
          ECT Sensor (Engine Coolant Temperature) 
             
            circuit range / performance problem | 
        
         
          |  
            
              90 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 97-98 | 
          96-98 | 
          n/a | 
          n/a | 
          n/a | 
          98 | 
          97-98 | 
        
         
          Evaporative Emission Control System 
             
            leak detected in the fuel tank area | 
        
         
          |  
            
              91 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          n/a | 
          n/a | 
          n/a | 
          98 | 
          97-98 | 
        
         
          Fuel Tank Pressure Sensor  
            low input | 
        
         
          |  
            
              92 
            
           | 
          Accord | 
          Civic | 
          CRV | 
          CRX | 
          Del Sol | 
          Odyssey | 
          Prelude | 
        
         
          | 96-98 | 
          96-98 | 
          97-98 | 
          n/a | 
          96-97 | 
          96-97 | 
          96-98 | 
        
         
          Evaporative Emission Control System 
             
            insufficient purge flow |