DTC P2252 Acura
Rear Air Fuel Ratio (A F) Sensor (Bank 1, Sensor 1) VS Circuit Low Voltage
Rear Air Fuel Ratio (A F) Sensor (Bank 1, Sensor 1) VS Circuit Low Voltage
Description
With engine running the VSB1 terminal voltage is 0.3 V or less, and the IPB1 terminal voltage is 1 V or more, for at least 5 seconds after the sensor becomes active, 85 seconds before the sensor becomes active.
Cause and Solution
Poor connections or loose terminals at the A F sensor (Sensor 1) and the PCM
Short 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: P2252
- Brand: Acura