P242A GMC - Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 3

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

P242A GMC Possible Causes

  • Faulty Exhaust Gas Temperature Sensor (EGTS) Bank 1 Sensor 3
  • Exhaust Gas Temperature Sensor Bank 1 Sensor 3 harness is open or shorted
  • Exhaust Gas Temperature Sensor Bank 1 Sensor 3 circuit poor electrical connection
  • Exhaust leaks
  • Excessive particulate matter buildup on sensor

How do I fix code P242A 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.
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Cost of diagnosing the P242A GMC code

Labor: 1.0

The cost of diagnosing the P242A 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.

Possible Symptoms

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

P242A GMC Description

The Powertrain Control Module (PCM) continuously monitors the Exhaust Gas Temperature Sensor (EGTS) for proper circuit continuity and out of range high values. The EGTS is located in front of the Diesel Oxidation Catalyst (DOC) and/or in front of the Diesel Particulate Filter (DPF). The EGTS detects exhaust gas temperature and converts it into a voltage and feeds back to the PCM with the voltage signal in order to control engine conditions to effectively reduce emissions. The PCM sets the P242A OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.
OBDII Code P242a Gmc - Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 3 - AutoCodes.com

More Information

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