P0170-29: Fuel Trim (Bank 1) - Signal invalid: Action
NOTE:
Operational requirements needed to allow the monitor to be fully tested.
Drive vehicle under steady state conditions for up to 20 minutes
Drive vehicle under steady state conditions for up to 20 minutes
- Check exhaust system for leakage. Rectify as required
- Check post catalyst heated oxygen sensor is correctly installed
- Inspect connectors for signs of water ingress, and pins for damage and/or corrosion
- Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check pre catalyst heated oxygen sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Refer to the applicable SYSTEM WIRING DIAGRAM(S) and check post catalyst heated oxygen sensor circuit for short circuit to ground, short circuit to power, open circuit, high resistance
- Using the manufacturer approved diagnostic system clear all stored DTCs using the `Diagnosis Menu' tab and retest
- Check and install a new pre catalyst heated oxygen sensor as required
- Check and install a new post catalyst heated oxygen sensor as required