P0237moderate severityPowertrain
Turbocharger/Supercharger Boost Sensor A Circuit Low
on 2004 GMC Yukon 5.3L V8 Vortec · RWD
What this code means
Low voltage from boost sensor A.
Symptoms
- Check Engine Light
- No boost indication
Common causes
- Short to ground
- Faulty sensor
Diagnostic steps
- Test voltage
- Check for shorts
Repair notes
Repair or replace sensor.
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