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P0141 OBD2 Fault Code in 1996 Ford F150: Causes and Fixes

Model: 1996 Ford F150 Fault Code: P0141 Posted: 2005-07-14 23:21

Hi everyone, I'm looking for help with a check engine light issue on my 1996 Ford F15-0 2-wheel-drive pickup. The vehicle has an inline 6-cylinder fuel-injected engine paired with a standard 5-speed transmission and currently shows OBD2 diagnostic code P0141. The code specifically reads: 'O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)', which has been triggered over the past three weeks. The truck has accumulated 135,000 km of mileage and the check engine light has remained on consistently. I'm seeking accurate information about what could be causing this fault and how to diagnose or repair it effectively. Any insights based on actual technical knowledge would be greatly appreciated. Thanks, Seanix

Related fault codes
P0141
Comments (1)
Anonymous 2005-07-15 09:36

Seanix, welcome to the OBD2 community! Here are some known causes for P0141 in a 1996 Ford F150: - Blown fuse related to the oxygen sensor circuit - Short circuit between VPWR and the HO2S (heated oxygen sensor) harness or sensor - Water ingress in the oxygen sensor connector - Open circuit in the VPWR or ground path - Low battery voltage affecting sensor operation - Poor electrical connections between the Power Control Module (PCM) and the HO2S sensor - Faulty heater element within the HO2S sensor itself - Potential issue with the PCM module These are common troubleshooting points for this code. A visual inspection of the wiring harness and connector, along with a voltage check at the sensor, can help pinpoint the root cause.