DTC P2B89 Alfa Romeo
Intake Air O2 Sensor Circuit Low Voltage
Intake Air O2 Sensor Circuit Low Voltage
Description
The Powertrain Control Module (PCM) detects a short to ground on the Intake O2 Sensor Signal circuit. After the first fault is detected the sensor is shutdown and re-initialized and the test is repeated. A fault is set after the monitor runs and fails for 7 counts.
Cause and Solution
Intake O2 Sensor Signal Circuit Shorted To Ground
Intake O2 Sensor Return Circuit Shorted To Ground
Intake O2 Positive Current Control Circuit Shorted To Ground
Intake O2 Pump Current Circuit Shorted To Ground
Intake O2 Sensor
Powertrain Control Module (Pcm)
Related Service Bulletins:
View Bulletin 1
View Bulletin 2
Video Guide
Diagnostic Info
- DTC Code: P2B89
- Brand: Alfa Romeo