P0131 Diagnostic Trouble Code Discussion for September 2020
Air Fuel Sensor (Bank 1 Sensor 1) Circuit Low Input (Lean Shift)
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| Help Request | Posted | |
| 2013 Ford E-350 Super Duty 5.4L MIL Lamp on VIN: 1FDWE3FL1D P0131: oxygen sensor sensor circuit low voltage Bank 1 sensor 1. ... Duty, 5.4L flex w/4 speed automatic - MIL ON; codes: P0131 - B1S1 O2 sensor circuit low voltage and P2198 - B2 S1 O2 sensor signal biased/stuck rich. Vehicle sent to us after both upstream B1 and B2 oxygen sensors replaced. It starts and runs well, ro... |
September 15, 2020 |
