Engine Error
P0103
Mass or Volume Air Flow Circuit High Input
Severity
Medium
Symptoms
Rough idle, poor fuel economy, rich running condition
Common Causes
- Short to power in MAF wiring
- Defective MAF sensor
- Severe vacuum leak before the throttle body
- Bad PCM ground
How to Fix
- 1 Test MAF wiring for voltage shorts
- 2 Replace the Mass Air Flow sensor
- 3 Inspect intake boot for tears
- 4 Check and clean engine grounds
Estimated Repair Cost
USD
$50
–
$400
Intake boot: $50 - $100; MAF sensor: $150 - $400