DTC P1172 Acura
Rear Air Fuel Ratio (A F) Sensor (Bank 1, Sensor 1) Circuit Out of Range High
Rear Air Fuel Ratio (A F) Sensor (Bank 1, Sensor 1) Circuit Out of Range High
Description
A malfunction is detected when the rear A F sensor (bank 1, sensor 1) output voltage is 4.7 V or more. The execution time is continuous and the duration time is 7 seconds or more. NOTE: Before you troubleshoot, record all freeze data and any on-board snapshot.
Cause and Solution
Poor connections or loose terminals at the A F sensor (Sensor 1) and the PCM
Video Guide
Diagnostic Info
- DTC Code: P1172
- Brand: Acura