| All About OBDII Engine Codes
AutoCodes - GMC - P1052 GMC

P1052 GMC Code - Reductant Heater 2 Driver High Temperature

- Code Popularity: 223 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

Code P1052 GMC Possible Causes

  • Faulty Reductant Line Heater
  • Reductant Line Heater harness is open or shorted
  • Reductant Line Heater circuit poor electrical connection
  • Faulty Reductant Pump and Sensor Assembly
  • Faulty Reductant Control Module

How do I Fix the Code P1052 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 P1052 GMC?

Labor: 1.0

The cost of diagnosing the P1052 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 P1052 GMC Possible Symptoms?

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

Code P1052 GMC Description

As reductant will freeze at temperatures below -11°C (12°F), there are 2 reductant heaters. Reductant heater 1 is integral to the Emission Reduction Fluid Supply Pump Module, located in the reductant tank. Reductant heater 2 is located in the supply line to the reductant injector. The Engine Control Module (ECM) monitors the reductant temperature in the tank in order to determine if the fluid is below its freeze point. If the ECM determines that the reductant may be frozen, it activates a "defrost strategy", by energizing the reductant heaters. The heaters are deactivated when the fluid temperature exceeds a calibrated value. The Diagnostic Trouble Code (DTC) will be set when the ECM indicates the reductant tank heater temperature is over the calibrated threshold for greater than 5 s.

OBDII Code P1052 GMC - Reductant Heater 2 Driver High Temperature -
P1052 GMC Code - Reductant Heater 2 Driver High Temperature

Need More Information on the P1052 GMC Code?

Need more information on how to fix the P1052 GMC code? Get Access to Factory Service Manuals

Need Help with the P1052 GMC Code?

Get the P1052 GMC code diagnosed by a professional: Find a repair shop in your area

Code P1052 GMC comments

Help us improve Leave a comment below or tell us if the information above helps you fix the code. What are the symptoms on your vehicle for the P1052 GMC code? Have you replaced any parts?
Any information is appreciated. Thanks