HF: Catalyst Efficiency Monitor and Exhaust Systems Introduction
HF: Pinpoint Tests See: Diagnostic Trouble Code Tests and Associated Procedures\SECTION 5: Pinpoint Tests\HF: Catalyst Efficiency Monitor and Exhaust Systems - Pinpoint Test
Note
This Pinpoint Test is intended to diagnose the following:
- Exhaust system pipes (front and rear)
- Exhaust system muffler and tailpipe assembly
- Catalytic converter
- Exhaust manifold
- Harness circuits: Downstream heated oxygen sensors (HO2S)
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