TorqueMech OBD Code Guide
P0104 - Mass or Volume Air Flow Circuit Intermittent
The mass air flow sensor signal is intermittent or unstable.
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Code Overview
The mass air flow sensor signal is intermittent or unstable.
Common Causes
- Dirty or failing mass air flow sensor
- Loose connector or poor terminal contact
- Damaged wiring causing signal dropouts
- Air leak or intake turbulence affecting the reading
Symptoms
- Intermittent hesitation or stumble
- Idle quality changes that come and go
- Unstable airflow readings on the scan tool
Diagnostic Steps
- Wiggle-test the MAF connector and harness while watching live data
- Inspect and clean the MAF sensor with MAF-safe cleaner if appropriate
- Check intake ducting, clamps, and boots for leaks or poor fitment
- Look for signal dropouts on the scan tool before replacing parts
Repair Difficulty
Moderate
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