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DTC Troubleshooting Index

DTC TROUBLESHOOTING INDEX

DTC (MIL indication(1)) Temporary DTC Detection Item MIL Note
P0107 (3) - Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage ON  
P0108 (3) - Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage ON  
P0111 (10) - Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem ON  
P0112 (10) - Intake Air Temperature (IAT) Sensor Circuit Low Voltage ON  
P0113 (10) - Intake Air Temperature (IAT) Sensor Circuit High Voltage ON  
P0116 (86) P0116 Engine Coolant Temperature (ECT) Sensor 1 Range/Performance Problem ON  
P0117 (6) - Engine Coolant Temperature (ECT) Sensor 1 Circuit Low Voltage ON  
P0118 (6) - Engine Coolant Temperature (ECT) Sensor 1 Circuit High Voltage ON  
P0122 (7) - Throttle Position (TP) Sensor A Circuit Low Voltage ON  
P0123 (7) - Throttle Position (TP) Sensor A Circuit High Voltage ON  
P0125 (86) P0125 Engine Coolant Temperature (ECT) Sensor 1 Slow Response ON  
P0128 (87) P0128 Cooling System Malfunction ON  
P0133 (157) P0133 Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Slow Response ON  
P0134 (151) - Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Heater System Malfunction ON  
P0135 (151) - Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Heater Circuit Malfunction ON  
P0137 (161) P0137 Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Circuit Low Voltage ON  
P0138 (161) P0138 Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Circuit High Voltage ON  
P0139 (161) P0139 Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Slow Response ON  
P0141 (163) - Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Heater Circuit Malfunction ON  
P0153 (158) P0153 Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Slow Response ON  
P0154 (152) - Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater System Malfunction ON  
P0155 (152) - Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Heater Circuit Malfunction ON  
P0157 (162) P0157 Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Circuit Low Voltage ON  
P0158 (162) P0158 Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Circuit High Voltage ON  
P0159 (162) P0159 Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Slow Response ON  
P0161 (164) - Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Heater Circuit Malfunction ON  
P0171 (153) P0171 Rear Bank (Bank 1) Fuel System Too Lean ON  
P0172 (153) P0172 Rear Bank (Bank 1) Fuel System Too Rich ON  
P0174 (154) P0174 Front Bank (Bank 2) Fuel System Too Lean ON  
P0175 (154) P0175 Front Bank (Bank 2) Fuel System Too Rich ON  
P0222 (7) - Throttle Position (TP) Sensor B Circuit Low Voltage ON  
P0223 (7) - Throttle Position (TP) Sensor B Circuit High Voltage ON  
P0300 (77), and some of P0301 (71), P0302 (72), P0303 (73), P0304 (74), P0305 (75), P0306 (76) P0300 and some of P0301, P0302, P0303, P0304, P0305, P0306 Random Misfire Detected ON  
P0301 (71) P0301 No. 1 Cylinder Misfire Detected ON  
P0302 (72) P0302 No. 2 Cylinder Misfire Detected ON  
P0303 (73) P0303 No. 3 Cylinder Misfire Detected ON  
P0304 (74) P0304 No. 4 Cylinder Misfire Detected ON  
P0305 (75) P0305 No. 5 Cylinder Misfire Detected ON  
P0306 (76) P0306 No. 6 Cylinder Misfire Detected ON  
P0325 (23) - Knock Sensor Circuit Malfunction ON  
P0335 (4) - Crankshaft Position (CKP) Sensor A No Signal ON  
P0339 (4) - Crankshaft Position (CKP) Sensor A Intermittent Interruption ON  
P0340 (9) - Camshaft Position (CMP) Sensor No Signal ON  
P0344 (9) - Camshaft Position (CMP) Sensor Intermittent Interruption ON  
P0385 (54) - Crankshaft Position (CKP) Sensor B No Signal ON  
P0389 (54) - Crankshaft Position (CKP) Sensor B Intermittent Interruption ON  
P0401 (80) P0401 Exhaust Gas Recirculation (EGR) Insufficient Flow ON  
P0404 (12) P0404 Exhaust Gas Recirculation (EGR) Control Circuit Range/Performance Problem ON  
P0406 (12) - Exhaust Gas Recirculation (EGR) Valve Position Sensor Circuit High Voltage ON  
P0420 (165) P0420 Rear Bank Catalyst System Efficiency Below Threshould (Bank 1) ON  
P0430 (166) P0430 Front Bank Catalyst System Efficiency Below Threshould (Bank 2) ON  
P0443 (92) - Evaporative Emission (EVAP) Canister Purge Valve Circuit Malfunction ON  
P0451 (91) P0451 Fuel Tank Pressure (FTP) Sensor Range/Performance Problem ON  
P0452 (91) - Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage ON  
P0453 (90) - Fuel Tank Pressure (FTP) Sensor Circuit High Voltage ON  
P0455 (90) P0455 Evaporative Emission (EVAP) System Very Large Leak Detected ON  
P0456 (90) P0456 Evaporative Emission (EVAP) System Very Small Leak Detected ON  
P0457 (90) P0457 Evaporative Emission (EVAP) System Leak Detected/Fuel Cap Loose or Missing ON  
P0461 (121) - Fuel Level Sensor (Fuel Gauge Sending Unit) Range/Performance Problem OFF  
P0462 (121) - Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit Low Voltage OFF  
P0463 (121) - Fuel Level Sensor (Fuel Gauge Sending Unit) Circuit High Voltage OFF  
P0496 (92) P0496 Evaporative Emission (EVAP) System High Purge Flow ON  
P0497 (90) P0497 Evaporative Emission (EVAP) System Low Purge Flow ON  
P0498 (117) - Evaporative Emission (EVAP) Canister Vent Shut Valve Control Circuit Low Voltage ON  
P0499 (117) - Evaporative Emission (EVAP) Canister Vent Shut Valve Control Circuit High Voltage ON  
P0506 (14) P0506 Idle Control System RPM Lower than Expected ON  
P0507 (14) P0507 Idle Control System RPM Higher than Expected ON  
P0562 (34) - Charging System Low Voltage OFF  
P0563 (34) - Powertrain Control Module (PCM) Power Source Circuit Unexpected Voltage OFF  
P0602 (196) - Powertrain Control Module (PCM) Programming Error ON  
P0603 (131) - Powertrain Control Module (PCM) Internal Control Module (Keep Alive Memory (KAM) Error) ON  
P0607 (131) - Lost Communication with Electronic Throttle Control System (ETCS) ON  
P0630 (139) - VIN Not Programmed or Mismatch ON  
P0641 (133) - Sensor Reference Voltage A Malfunction ON  
P0685 (135) P0685 Powertrain Control Module (PCM) Power Control Circuit Malfunction ON  
P07xx(70)(2) - Automatic Transaxle System Malfunction ON Refer to the AUTOMATIC TRANSMISSION DTC TROUBLESHOOTING INDEX 
P07xx(-) - Automatic Transaxle System Malfunction OFF Refer to the AUTOMATIC TRANSMISSION DTC TROUBLESHOOTING INDEX 
P1109 (90) - Barometric Pressure (BARO) Sensor Circuit Out of Range High ON  
NOTE: The following DTCs are indicated when the PGM-FI system is selected in the HDS.
Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T system, and check for automatic transmission DTCs.
(1) These DTCs are indicated by a blinking MIL when the SCS service signal line is jumped with the HDS.
(2) The D indicator and the MIL may come on simultaneously.
DTC TROUBLESHOOTING INDEX

DTC (MIL indication(1)) Temporary DTC Detection Item MIL Note
P1116 (86) - Engine Coolant Temperature (ECT) Sensor 1 Performance Problem ON  
P1128 (5) P1128 Manifold Absolute Pressure (MAP) Sensor Signal Lower Than Expected ON  
P1129 (5) P1129 Manifold Absolute Pressure (MAP) Sensor Signal Higher Than Expected ON  
P1172 (158) - Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Circuit Out of Range High ON  
P1174 (158) - Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Circuit Out of Range High ON  
P1297 (20) - Electrical Load Detector (ELD) Circuit Low Voltage OFF  
P1298 (20) - Electrical Load Detector (ELD) Circuit High Voltage OFF  
P1454 (91) P1454 Fuel Tank Pressure (FTP) Sensor Range/Performance Problem ON  
P1549 (34) - Charging System High Voltage OFF  
P1658 (40) - Electronic Throttle Control System (ETCS) Control Relay ON Malfunction ON  
P1659 (40) - Electronic Throttle Control System (ETCS) Control Relay OFF Malfunction ON  
P1683 (40) - Throttle Valve Default Position Spring Performance Problem ON  
P1684 (40) - Throttle Valve Return Spring Performance Problem ON  
P16BB (116) - Alternator B Terminal Circuit Low Voltage OFF  
P16BC (116) - Alternator FR Terminal Circuit/IGP Circuit Low Voltage OFF  
P2101 (40) - Throttle Actuator System Malfunction ON  
P2108 (40) - Throttle Actuator Control CPU Problem ON  
P2118 (40) - Throttle Actuator Current Range/Performance Problem ON  
P2122 (37) - Accelerator Pedal Position (APP) Sensor A (Throttle Position Sensor D) Circuit Low Voltage ON  
P2123 (37) - Accelerator Pedal Position (APP) Sensor A (Throttle Position Sensor D) Circuit High Voltage ON v
P2127 (37) - Accelerator Pedal Position (APP) Sensor B (Throttle Position Sensor E) Circuit Low Voltage ON  
P2128 (37) - Accelerator Pedal Position (APP) Sensor B (Throttle Position Sensor E) Circuit High Voltage ON  
P2135 (7) - Throttle Position (TP) Sensor A/B Voltage Incorrect Correlation ON  
P2138 (37) - Accelerator Pedal Position (APP) Sensor A/B (Throttle Position Sensor D/E) Incorrect Voltage Correlation ON  
P2176 (40) - Throttle Actuator Control System Idle Position Not Learned ON  
P2183 (192) - Engine Coolant Temperature (ECT) Sensor 2 Circuit Range/Performance Problem ON  
P2184 (192) - Engine Coolant Temperature (ECT) Sensor 2 Circuit Low Voltage ON  
P2185 (192) - Engine Coolant Temperature (ECT) Sensor 2 Circuit High Voltage ON  
P2195 (155) - Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Signal Stuck Lean ON v
P2197 (156) - Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Signal Stuck Lean ON  
P2227 (13) P2227 Barometric Pressure (BARO) Sensor Circuit Range/Performance Problem ON  
P2228 (13) - Barometric Pressure (BARO) Sensor Circuit Low Voltage ON  
P2229 (13) - Barometric Pressure (BARO) Sensor Circuit High Voltage ON  
P2237 (155) - Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP Line High Voltage ON (see )
P2238 (155) - Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) IP Line Low Voltage ON  
P2240 (156) - Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Line High Voltage ON  
P2241 (156) - Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Line Low Voltage ON  
P2243 (155) - Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Line High Voltage ON  
P2245 (155) - Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Line Low Voltage ON  
P2247 (156) - Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Line High Voltage ON  
P2249 (156) - Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Line Low Voltage ON  
P2251 (155) - Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Line High Voltage ON  
P2252 (155) - Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Line Low Voltage ON  
P2254 (156) - Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VS Line High Voltage ON  
P2255 (156) - Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VS Line Low Voltage ON  
P2270 (161) - Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Circuit Signal Stuck Lean ON  
P2271 (161) - Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Circuit Signal Stuck Rich ON  
P2272 (162) - Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Circuit Signal Stuck Lean ON  
P2273 (162) - Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Circuit Signal Stuck Rich ON  
P2279 (109) P2279 Intake Air System Leak ON  
P2413 (12) P2413 Exhaust Gas Recirculation (EGR) System Malfunction ON  
P2422 (117) P2422 Evaporative Emission (EVAP) Canister Vent Shut Valve Stuck Closed Malfunction ON  
P2610 (132) - Powertrain Control Module (PCM) Internal Power Off Timer Performance Problem ON  
P2627 (155) - Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) LABEL Circuit Low Voltage ON  
P2628 (155) - Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) LABEL Circuit High Voltage ON  
P2630 (156) - Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) LABEL Circuit Low Voltage ON  
P2631 (156) - Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) LABEL Circuit High Voltage ON  
P2646 (22) - VTEC Oil Pressure Switch Circuit Low Voltage ON  
P2647 (22) - VTEC Oil Pressure Switch Circuit High Voltage ON  
P2648 (21) - VTEC Solenoid Valve Circuit Low Voltage ON  
P2649 (21) - VTEC Solenoid Valve Circuit High Voltage ON  
P2A00 (157) - Rear A/F Sensor Range/Performance Problem (Bank 1, Sensor 1) ON  
P2A03 (158) - Front A/F Sensor Range/Performance Problem (Bank 2, Sensor 1) ON  
U0073 (126) - F-CAN Malfunction (BUS-OFF) OFF  
U0114 (126) - F-CAN Malfunction (VTM-4 Control Unit-PCM) OFF  
U0122 (126)(2) - F-CAN Malfunction (VSA-PCM) OFF  
U0155 (126) - F-CAN Malfunction (Gauge Control Module-PCM) OFF  
NOTE: The following DTCs are indicated when the PGM-FI system is selected in the HDS.
Some automatic transmission DTCs cause the MIL to come on. If the MIL is on and no DTCs are indicated in the PGM-FI system, select the A/T system, and check for automatic transmission DTCs.
(1) These DTCs are indicated by a blinking MIL when the SCS service signal line is jumped with the HDS.
(2) VSA model
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