P0135 Diagnostic Trouble Code Discussion for March 2023
Heated Oxygen Sensor (Bank 1 Sensor 1) Heater Performance
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| Help Request | Posted | |
| 2013 Ford Expedition Limited 5.4L MIL Lamp on VIN: 1FMJU2A56D P0135: O2 1-1 heater circuit. ... P0030, P0135. Both banks tested at 3 ohms cold. spec is 3-30 ohms. With the ECM disconnected, both measured 2.7 ohms and dropping. I swapped the heater ground wires at the ECM, and code P0135 moved with the wire, whil... |
March 20, 2023 |
