Test Description
NOTE:
Test numbers refer to numbers on diagnostic chart.
- If bank 2 is operating rich, short term fuel trim will be near 112, and long term fuel trim will be near 118. These parameters are an average of all fuel trim cells.
- Codes P0172 and P0175 set at same time indicates both banks are operating rich. Inspect components/systems that could cause this condition. Check for collapsed intake duct or plugged air filter, blocked inlet screen and throttle position sensor for loose or missing bolts.
- Inspect components/systems that will cause one bank to be rich. Visually/physically inspect all injector driver circuits for short to ground.