DTC P2254 Acura
Front A F Sensor (Bank 2, Sensor 1) VS Circuit High Voltage
Front A F Sensor (Bank 2, Sensor 1) VS Circuit High Voltage
Description
With engine running the VSB2 terminal voltage is 6 V or more, and the PCM internal signal voltage is 4.6 V or more, for at least 5 seconds. The execution time is continuous and DTCs P0155, P2197, P2240, P2241, P2247, P2249, P2255, P2630, P2631 are not active. NOTE: If DTC P2254 is stored at the same time as DTC P0154, troubleshoot DTC P2254 first, then recheck for P0154.
Cause and Solution
Poor connections or loose terminals at the A F sensor (Sensor 1) and the PCM
Open circuit between the PCM and the A F sensor (Sensor 1)
Faulty A F sensor (Sensor 1)
PCM may need to be updated with the latest software
Video Guide
Diagnostic Info
- DTC Code: P2254
- Brand: Acura