Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2002 Acura 1.7EL StandardFACTORY OEM SERVICE PROCEDURE
DTC Troubleshooting: Notes
DTC Troubleshooting List
| DTC | Description |
|---|---|
| DTC P0107 | MAP Sensor Circuit Low Voltage |
| DTC P0108 | MAP Sensor Circuit High Voltage |
| DTC P1128 | MAP Sensor Signal Lower Than Expected |
| DTC P1129 | MAP Sensor Signal Higher Than Expected |
| DTC P0112 | IAT Sensor Circuit Low Voltage |
| DTC P0113 | IAT Sensor Circuit High Voltage |
| DTC P0116 | ECT Sensor Range/Performance Problem |
| DTC P0117 | ECT Sensor Circuit Low Voltage |
| DTC P0118 | ECT Sensor Circuit High Voltage |
| DTC P0122 | TP Sensor Circuit Low Voltage |
| DTC P0123 | TP Sensor Circuit High Voltage |
| DTC P1121 | TP Sensor Signal Lower Than Expected |
| DTC P1122 | TP Sensor Signal Higher Than Expected |
| DTC P0128 | Cooling System Malfunction |
| DTC P0131 | Primary HO2S (Sensor 1) Circuit Low Voltage |
| DTC P0132 | Primary HO2S (Sensor 1) Circuit High Voltage |
| DTC P0133 | Primary HO2S (Sensor 1) Slow Response |
| DTC P0135 | Primary HO2S (Sensor 1) Heater Circuit Malfunction |
| DTC P0137 | Secondary HO2S (Sensor 2) Circuit Low Voltage |
| DTC P0138 | Secondary HO2S (Sensor 2) Circuit High Voltage |
| DTC P0139 | Secondary HO2S (Sensor 2) Slow Response |
| DTC P0141 | Secondary HO2S (Sensor 2) Heater Circuit Malfunction |
| DTC P0171 | Fuel System Too Lean, DTC P0172: Fuel System Too Rich |
| DTC P0300 | Random Misfire and Any Combination of the Following: DTC P0301: No. 1 Cylinder Misfire, DTC P0302: No. 2 Cylinder Misfire, DTC P0303: No. 3 Cylinder Misfire, DTC P0304: No. 4 Cylinder Misfire |
| DTC P0301 | No. 1 Cylinder Misfire, DTC P0302: No. 2 Cylinder Misfire, DTC P0303: No. 3 Cylinder Misfire, DTC P0304: No. 4 Cylinder Misfire |
| DTC P0325 | Knock Sensor Circuit Malfunction |
| DTC P1324 | Knock Sensor Power Source Circuit Low Voltage |
| DTC P0335 | CKP Sensor No Signal, DTC P0336: CKP Sensor Intermittent Interruption |
| DTC P0500 | VSS Circuit Malfunction, DTC P0501: VSS Range/Performance Problem |
| DTC P0563 | ECM/PCM Power Source Circuit Unexpected Voltage |
| DTC P1106 | BARO Sensor Range/Performance Problem |
| DTC P1107 | BARO Sensor Circuit Low Voltage, DTC P1108: BARO Sensor Circuit High Voltage |
| DTC P1259 | VTEC System Malfunction |
| DTC P1361 | TDC Sensor Intermittent Interrupt on, DTC P1362: TDC Sensor No Signal |
| DTC P1607 | Malfunction in ECM/PCM Internal Circuit |
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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