Engine-Codes - Chevrolet - P1172 CHEVROLET

P1172 CHEVROLET - Fuel Pump Insufficient Flow

Repair Importance Level: 3/3
Repair Difficulty Level: 2/3  What is this?
Table of contents

P1172 CHEVROLET Possible Causes

  • Faulty Fuel Pump
  • Fuel Pump harness is open or shorted
  • Fuel Pump circuit poor electrical connection

How is the P1172 CHEVROLET code repair?

Start by checking 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.

Tech Notes

There is a factory service bulletin for the following Chevrolet Models:
2001 Chevrolet Silverado
2002 Chevrolet Silverado
2003 Chevrolet Silverado
2004 Chevrolet Silverado
2005 Chevrolet Silverado
2001-2005 Chevrolet Silverado Factory Service Bulletin OBDII Code P1172

What is the cost to diagnose the P1172 CHEVROLET code

Labor: 1.0

The cost to diagnose the P1172 CHEVROLET code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

P1172 CHEVROLET Meaning

The fuel pump is located on the left frame rail between the fuel tanks. The Engine Control Module (ECM) provides ignition positive voltage to the coil side of the fuel pump relay. The ECM energizes the fuel pump relay, which applies power to the fuel pump. Fuel is transferred from the rear fuel tank to the front fuel tank in order to ensure all of the usable fuel volume is available to the engine. This Diagnostic Trouble Code (DTC) sets when the ECM commands the transfer fuel pump ON and a predetermined change in the front and rear fuel level sensors does not occur.

More Information

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