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.
2003 Honda Pilot EXFACTORY OEM SERVICE PROCEDURE
DTC Troubleshooting: Notes
DTC TROUBLESHOOTING INDEX
| DTC | Description | ||
|---|---|---|---|
| DTC P0107 | MAP Sensor Circuit Low Voltage | ||
| DTC P0108 | MAP Sensor Circuit High Voltage | ||
| 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 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 Tool Lean | ||
| DTC P0172 | DTC P0172: Fuel System Too Rich | ||
| DTC P0300 | (1) | ||
| DTC P0301 | No. 1 Cylinder Misfire Detected | ||
| DTC P0302 | No. 2 Cylinder Misfire Detected | ||
| DTC P0303 | No. 3 Cylinder Misfire Detected | ||
| DTC P0304 | No. 4 Cylinder Misfire Detected | ||
| DTC P0305 | No. 5 Cylinder Misfire Detected | ||
| DTC P0306 | No. 6 Cylinder Misfire Detected | ||
| DTC P0325 | Knock Sensor Circuit Malfunction | ||
| DTC P0335 | CKP Sensor No Signal | ||
| DTC P0336 | CKP Sensor Intermittent Interruption | ||
| DTC P0340 | CMP Sensor A No Signal | ||
| DTC P0341 | CMP Sensor A Intermittent Interruption | ||
| DTC P0365 | CMP Sensor B No Signal | ||
| DTC P0366 | CMP Sensor B Intermittent Interruption | ||
| DTC P0607 | PCM Backup Circuit Malfunction | ||
| DTC P1106 | BARO Sensor Range/Performance Problem | ||
| DTC P1107 | BARO Sensor Circuit Low Voltage | ||
| DTC P1108 | BARO Sensor Circuit High Voltage | ||
| DTC P1121 | TP Sensor Signal Lower Than Expected | ||
| DTC P1122 | TP Sensor Signal Higher Than Expected. | ||
| DTC P1128 | MAP Sensor Signal Lower Than Expected | ||
| DTC P1129 | MAP Sensor Signal Higher Than Expected | ||
| DTC P1297 | ELD Circuit Low Voltage | ||
| DTC P1298 | ELD Circuit High Voltage | ||
| DTC P1607 | PCM Internal Circuit Malfunction | ||
|
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Factory Service Tools
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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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