DTC Troubleshooting Index
WARNING: This page is about a different car, the 2009 Acura MDX, 2008 Acura MDX, and 2007 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
DTC TROUBLESHOOTING CHART
| DTC (MIL indication(2)) | Two Drive Cycle Detection | Detection Item | MIL | ||||
|---|---|---|---|---|---|---|---|
| P0101 (50) | ◦ | Mass Air Flow (MAF) Sensor Range/Performance Problem | ON | ||||
| P0102 (50) | -- | Mass Air Flow (MAF) Sensor Circuit Low Voltage | ON | ||||
| P0103 (50) | -- | Mass Air Flow (MAF) Sensor Circuit High Voltage | ON | ||||
| 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) | ◦ | 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) | ◦ | Engine Coolant Temperature (ECT) Sensor 1 Malfunction/Slow Response | ON | ||||
| P0128 (87) | ◦ | Cooling System Malfunction | ON | ||||
| P0133 (157) | ◦ | Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Response Malfunction/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) | ◦ | Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Circuit Low Voltage | ON | ||||
| P0138 (161) | ◦ | Rear Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 1, Sensor 2)) Circuit High Voltage | ON | ||||
| P0139 (161) | ◦ | 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) | ◦ | Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Response Malfunction/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) | ◦ | Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Circuit Low Voltage | ON | ||||
| P0158 (162) | ◦ | Front Secondary Heated Oxygen Sensor (Secondary HO2S (Bank 2, Sensor 2)) Circuit High Voltage | ON | ||||
| P0159 (162) | ◦ | 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) | ◦ | Rear Bank (Bank 1) Fuel System Too Lean | ON | ||||
| P0172 (153) | ◦ | Rear Bank (Bank 1) Fuel System Too Rich | ON | ||||
| P0174 (154) | ◦ | Front Bank (Bank 2) Fuel System Too Lean | ON | ||||
| P0175 (154) | ◦ | 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 any combination of following P0301 (71) P0302 (72) P0303 (73) P0304 (74) P0305 (75) P0306 (76) |
◦ | Random Misfire Detected | ON | ||||
| P0301 (71) | ◦ | No. 1 Cylinder Misfire Detected | ON | ||||
| P0302 (72) | ◦ | No. 2 Cylinder Misfire Detected | ON | ||||
| P0303 (73) | ◦ | No. 3 Cylinder Misfire Detected | ON | ||||
| P0304 (74) | ◦ | No. 4 Cylinder Misfire Detected | ON | ||||
| P0305 (75) | ◦ | No. 5 Cylinder Misfire Detected | ON | ||||
| P0306 (76) | ◦ | 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) | ◦ | Exhaust Gas Recirculation (EGR) Insufficient Flow | ON | ||||
| P0404 (12) | ◦ | 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) | ◦ | Rear Bank Catalyst System Efficiency Below Threshold (Bank 1) | ON | ||||
| P0430 (166) | ◦ | Front Bank Catalyst System Efficiency Below Threshold (Bank 2) | ON | ||||
| P0443 (92) | -- | Evaporative Emission (EVAP) Canister Purge Valve Circuit Malfunction | ON | ||||
| P0451 (91) | ◦ | Fuel Tank Pressure (FTP) Sensor Range/Performance Problem | ON | ||||
| P0452 (91) | ◦ | Fuel Tank Pressure (FTP) Sensor Circuit Low Voltage | ON | ||||
| P0453 (91) | ◦ | Fuel Tank Pressure (FTP) Sensor Circuit High Voltage | ON | ||||
| P0455 (90) | ◦ | Evaporative Emission (EVAP) System Very Large Leak Detected | ON | ||||
| P0456 (90) | ◦ | Evaporative Emission (EVAP) System Very Small Leak Detected | ON | ||||
| P0457 (90) | -- | Evaporative Emission (EVAP) System Leak Detected/Fuel Fill Cap Loose or Missing | OFF | ||||
| 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) | ◦ | Evaporative Emission (EVAP) System High Purge Flow | ON | ||||
| P0497 (90) | ◦ | 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) | ◦ | Idle Control System RPM Lower than Expected | ON | ||||
| P0507 (14) | ◦ | Idle Control System RPM Higher than Expected | ON | ||||
| P050A (167) | ◦ | Cold Start Idle Air Control System Performance Problem | ON | ||||
| P050B (167) | ◦ | Cold Start Ignition Timing Performance Problem | 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 | ||||
| P060A (131) | -- | Powertrain Control Module (PCM) (A/T System) Internal Control Module Malfunction | ON | ||||
| P0615 (198) | -- | Starter Cut Relay STRLD Circuit Malfunction | OFF | ||||
| P0627 (169) | -- | Fuel Pump Control Module System Malfunction | ON | ||||
| P062F (131) | -- | Powertrain Control Module (PCM) Internal Control Module Keep Alive Memory (KAM) Error | ON | ||||
| P0630 (139) | -- | VIN Not Programmed or Mismatch | ON | ||||
| P0685 (135) | ◦ | Powertrain Control Module (PCM) Power Control Circuit/Internal Circuit Malfunction | ON | ||||
| P1077 (106) | ◦ | Intake Manifold Tuning (IMT) Valve Stuck in High RPM Position | ON | ||||
| P1078 (106) | ◦ | Intake Manifold Tuning (IMT) Valve Stuck in Low RPM Position | ON | ||||
| P1109 (13) | -- | Barometric Pressure (BARO) Sensor Circuit Out of Range High | ON | ||||
| P1116 (86) | ◦ | Engine Coolant Temperature (ECT) Sensor 1 Range/Performance Problem | ON | ||||
| P1128 (5) | ◦ | Manifold Absolute Pressure (MAP) Sensor Signal Lower Than Expected | ON | ||||
| P1129 (5) | ◦ | Manifold Absolute Pressure (MAP) Sensor Signal Higher Than Expected | ON | ||||
| P1172 (157) | ◦ | 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) | ◦ | Fuel Tank Pressure (FTP) Sensor Range/Performance Problem | ON | ||||
| P145C (90) | ◦ | Evaporative Emission (EVAP) System Purge Flow Malfunction (Vacuum Line) | 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 | ||||
| P16BD (198) | -- | Starter Cut Relay 2 Malfunction | OFF | ||||
| P16BE (198) | -- | Starter Cut Relay 1 Malfunction | OFF | ||||
| P16BF (198) | -- | Starter Cut Relay STRLY Circuit Malfunction | OFF | ||||
| P2101 (40) | -- | Electronic Throttle Control System (ETCS) Malfunction | ON | ||||
| P2118 (40) | -- | Throttle Actuator Current Range/Performance Problem | ON | ||||
| P2122 (37) | -- | Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit Low Voltage | ON | ||||
| P2123 (37) | -- | Accelerator Pedal Position (APP) Sensor A (Throttle Position (TP) Sensor D) Circuit High Voltage | ON | ||||
| P2127 (37) | -- | Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP) Sensor E) Circuit Low Voltage | ON | ||||
| P2128 (37) | -- | Accelerator Pedal Position (APP) Sensor B (Throttle Position (TP) 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 (TP) 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 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 | ||||
| P2197 (156) | ◦ | Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Signal Stuck Lean | ON | ||||
| P2227 (13) | ◦ | Barometric Pressure (BARO) Sensor 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 Circuit High Voltage | ON | ||||
| P2238 (155) | -- | Rear Air Fuel Ratio (A/F) Sensor (Bank 1t Sensor 1) IP Circuit Low Voltage | ON | ||||
| P2240 (156) | -- | Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Circuit High Voltage | ON | ||||
| P2241 (156) | -- | Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) IP Circuit Low Voltage | ON | ||||
| P2243 (155) | -- | Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Circuit High Voltage | ON | ||||
| P2245 (155) | -- | Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VCENT Circuit Low Voltage | ON | ||||
| P2247 (156) | -- | Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Circuit High Voltage | ON | ||||
| P2249 (156) | -- | Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VCENT Circuit Low Voltage | ON | ||||
| P2251 (155) | -- | Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Circuit High Voltage | ON | ||||
| P2252 (155) | -- | Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) VS Circuit Low Voltage | ON | ||||
| P2254 (156) | -- | Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VS Circuit High Voltage | ON | ||||
| P2255 (156) | -- | Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) VS Circuit 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) | ◦ | Intake Air System Leak | ON | ||||
| P2413 (12) | ◦ | Exhaust Gas Recirculation (EGR) System Malfunction | ON | ||||
| P2422 (117) | ◦ | Evaporative Emission (EVAP) Canister Vent Shut Valve Close Malfunction | ON | ||||
| P2610 (132) | -- | Powertrain Control Module (PCM) Internal Power Off Timer Performance Problem | ON | ||||
| P2646 (22) | -- | Rocker Arm Oil Pressure Switch Circuit Low Voltage | ON | ||||
| P2647 (22) | -- | Rocker Arm Oil Pressure Switch Circuit High Voltage | ON | ||||
| P2648 (21) | -- | Rocker Arm Oil Control Solenoid Circuit Low Voltage | ON | ||||
| P2649 (21) | -- | Rocker Arm Oil Control Solenoid Circuit High Voltage | ON | ||||
| P2A00 (157) | ◦ | Rear Air Fuel Ratio (A/F) Sensor (Bank 1, Sensor 1) Range/Performance Problem | ON | ||||
| P2A03 (158) | ◦ | Front Air Fuel Ratio (A/F) Sensor (Bank 2, Sensor 1) Range/Performance Problem | ON | ||||
| U0028 (126) | -- | F-CAN Malfunction (BUS-OFF (Powertrain Control Module (PCM))) | ON | ||||
| U0114 (126) | -- | F-CAN Malfunction (Powertrain Control Module (PCM)-SH-AWD Control Unit) | OFF | ||||
| U0122 (126) | -- | F-CAN Malfunction (Powertrain Control Module (PCM)-VSA Modulator-Control Unit) | OFF | ||||
| U0155 (126) | -- | F-CAN Malfunction (Powertrain Control Module (PCM)-Gauge Control Module) | ON | ||||
| U0300 (131) | -- | PGM-FI System and A/T System Program Version Mismatch | ON | ||||
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