| All About OBDII Engine Codes
AutoCodes - GMC - P1198 GMC

P1198 GMC Code - Exhaust Gas Temperature Sensor 5 Performance Engine Running

- Code Popularity: 1,044 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents
Share on Facebook   Share on Twitter   Share on Linkedin

Code P1198 GMC Possible Causes

  • Faulty Exhaust Gas Temperature Sensor
  • Exhaust Gas Temperature Sensor harness is open or shorted
  • Exhaust Gas Temperature Sensor circuit poor electrical connection
  • Faulty Engine Control Module (ECM)

How do I Fix the Code P1198 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 P1198 GMC?

Labor: 1.0

The cost of diagnosing the P1198 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 P1198 GMC Possible Symptoms?

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

Code P1198 GMC Description

The exhaust gas temperature sensors are variable resistors that measure the temperature of the exhaust gas. The exhaust temperature sensor 1 is the first exhaust temperature sensor on the exhaust system, the following exhaust temperature sensors are counted upward from the engine outlet to the exhaust system end. The Engine Control Module (ECM) supplies 5 V to the exhaust gas temperature signal circuit and supplies a ground to the low reference circuit. The exhaust gas temperature sensor temperature information is used by the ECM during the exhaust gas particulate filter cleaning process. The Diagnostic Trouble Code (DTC) will be set if the ECM detects that the difference between measured exhaust gas temperature and the estimated exhaust gas temperature is greater than a calibrated amount for greater than 1 s.

OBDII Code P1198 GMC - Exhaust Gas Temperature Sensor 5 Performance Engine Running -
P1198 GMC Code - Exhaust Gas Temperature Sensor 5 Performance Engine Running

Need More Information on the P1198 GMC Code?

Need more information on how to fix the P1198 GMC code? Get Access to Factory Service Manuals

Need Help with the P1198 GMC Code?

Get the P1198 GMC code diagnosed by a professional: Find a repair shop in your area

Code P1198 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 P1198 GMC code? Have you replaced any parts?
Any information is appreciated. Thanks