P0031 Diagnostic Trouble Code Discussion for September 2012
Air Fuel Sensor (Bank 1 Sensor 1) Heater Control Circuit Low Voltage
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| Help Request | Posted | |
| 2001 Dodge Ram 1500 Laramie 5.2L Hesitation, MIL Lamp on VIN: 3B7HF13Y91 P0031: 1/1 O2 sensor heater circuit low. This one is driving me crazy. After running Mitchell's flow chart for "shorted to voltage codes" and preforming some tests that aren't in the book, everything pointed to a bad PCM. New PCM - No fix. Tried different O2 sensors - No fix. PCM data reads 4... |
September 14, 2012 |
