P1129 OBD Trouble Code

1 result found

P1129 - Ford
Type Powertrain - Manufacturer Controlled DTC - Manufacturer Controlled
Description

Rear HO2S, HO2S Swapped Bank-to-Bank Conditions

Location Bank 1 Sensor 2, Bank 2 Sensor 2
Cause

Engine running in closed loop, then the PCM detected the HO2S signal response to a fuel shift did not correspond to the correct engine bank

Try also: https://www.obd-codes.com/p1129