List Of Important Honda OBD2 DTC Fault Codes

List Of Honda On-Board Diagnostic OBD2 DTC Fault Codes – Here are list of important OBD2 diagnostic trouble code for Honda cars. The DTC code number, DTC code location and possible causes of trouble .

Honda OBD2 Fault Code List -Fault Location And Possible Causes

Honda Code P0101 P0102 P0103

1.Fault Location- Mass airflow sensor MAF sensor

2.Symptoms- Engine check-light ON, immoderate fuel consumption, excessive smoke from exhaust, rough running engine.

3.Possible Causes – MAF sensor range or performance problem, MAF sensor circuit low voltage, MAF sensor circuit high voltage.

4.How To Fix- Inspect related wiring, harness and connector. Inspect possible causes given above.

Honda Code P0106 P0107 P0108

1.Fault Location-Manifold Absolute sensor MAP sensor

2.Symptoms-Engine performance issue, engine stalling and reduce power, fuel efficiency reduced, engine check light ON.

3.Possible Causes-MAP sensor range or performance problem. MAP sensor harness open or short, poor electrical connection of MAP sensor circuit, faulty ECM.

4.How To Fix- Inspect MAP sensor related wiring, harness and connector. Inspect possible causes given above.

Honda Code P0111 P0112 P0113

1.Fault Location- Intake Air Temperature sensor IAT sensor

2.Symptoms-Engine check light ON.

3.Possible Causes- Faulty IAT sensor, dirty or choked air filter, IAT sensor harness open or short, poor electrical connection of sensor circuit.

4.How To Fix- Inspect IAT sensor related wiring, harness and connector. Inspect possible causes given above.

Honda Code P0116 P0117 P0118

1.Fault Location-Engine Coolant Temperature sensor ECT sensor

2.Symptoms- Engine overheating, engine cylinder misfire, bad fuel efficiency, engine check light ON.

3.Possible Causes-Low engine coolant level, faulty ECT sensor, faulty engine thermostat, ECT sensor harness open or short, poor electrical connection of ECT sensor circuit.

4.How To Fix- Inspect ECT sensor, inspect ECT sensor wiring, harness and connector, inspect ECM.

Honda Code P0122 P0123

1.Fault Location- Throttle position sensor TP sensor

2.Symptoms-Engine misfiring, acceleration poor, engine hard starting or no starting, Fuel efficiency decreases, engine check-light illuminates.

3.Possible Causes-Faulty TP sensor, TP sensor harness open or shorted, poor electrical connection of TP sensor.

4.How To Fix- Inspect wiring and connection between TP sensor and ECM, Clean TP sensor and its connector, Replace TP sensor if found damage or failed.

Here are common symptoms, possible causes and how to fix common Honda OBD2 codes. Its important to consult professional mechanic or Honda dealer for proper diagnosis and repair.

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