P0108moderate severityPowertrain
MAP/BARO Pressure Circuit High Input
on 2004 GMC Yukon 5.3L V8 Vortec · RWD
What this code means
The MAP sensor signal voltage is above the maximum expected value.
Symptoms
- Check Engine Light
- Lean running
- Poor acceleration
- Surge
Common causes
- Open circuit in MAP signal wire
- Faulty MAP sensor
- Short to voltage
Diagnostic steps
- Test MAP voltage
- Check for open circuits
- Test sensor reference voltage
Repair notes
Repair wiring or replace MAP sensor.
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