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AutoCodes - GMC - P1089 GMC

P1089 GMC Code - Fuel Rail Pressure Performance During Deceleration Fuel Cut-Off

- Code Popularity: 8,072 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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Code P1089 GMC Possible Causes

  • Faulty Fuel Injector
  • Faulty Fuel Pressure Regulator
  • Fuel Pressure Regulator harness is open or shorted
  • Fuel Pressure Regulator circuit poor electrical connection

How do I Fix the Code P1089 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.

Does your GMC have Safety Recalls? → Check here

What is the Cost to Diagnose the Code P1089 GMC?

Labor: 1.0

The cost of diagnosing the P1089 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.

What are Code P1089 GMC Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P1089 GMC Description

The Engine Control Module (ECM) monitors for changes in fuel rail pressure when the vehicle is in a deceleration condition and the fuel injected quantity is at zero. When scan tool parameter Deceleration Fuel Cut-Off is active, the fuel rail pressure should not deviate more than 2 MPa (290 PSI) from a calculated setpoint. If the fuel rail pressure deviates more than 2. MPa (290 PSI) from the calculated setpoint for approximately 10 seconds of cumulative deceleration (this may take multiple drive cycles), the Diagnostic Trouble Code (DTC) will set.

OBDII Code P1089 GMC - Fuel Rail Pressure Performance During Deceleration Fuel Cut-Off -
P1089 GMC Code - Fuel Rail Pressure Performance During Deceleration Fuel Cut-Off

Need More Information on the P1089 GMC Code?

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Code P1089 GMC comments

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