Fuel Pressure Regulator Control Circuit
Table of contents
P0090 GMC Possible Causes
- Faulty fuel pressure sensor
- Fuel pressure sensor harness is open or shorted
- Fuel pressure sensor electrical circuit poor connection
- Faulty Engine Control Module (ECM)
How do I fix code P0090 GMC?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the P0090 GMC code
The cost of diagnosing the P0090 GMC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
When is the code detected
If the current is outside of the expected range, DTC P0090 will set.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0090 GMC Description
The Engine Control Module (ECM) supplies power and ground to the Fuel Rail Pressure (FRP) regulator. The ECM monitors current on the circuits to detect a failure.