Practice question
Before condemning an EFI sensor based on a trouble code, good practice is to:
- Replace the ECU first
- Inspect the wiring, connectors, and grounds, and verify the sensor signal with a meter/scan data
- Remove the sensor and discard it
- Increase the idle speed
Answer: B — Inspect the wiring, connectors, and grounds, and verify the sensor signal with a meter/scan data
The correct answer is shown above. Try the full quiz for additional practice.
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