P20E4 - Exhaust Gas Temperature Sensor 2/3 Correlation Bank 1

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Exhaust Gas Temperature Sensor
  • Exhaust Gas Temperature Sensor harness is open or shorted
  • Exhaust Gas Temperature Sensor circuit poor electrical connection
  • Exhaust leaks
  • Excessive particulate matter buildup on sensor

Possible symptoms

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

P20e4 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 P20E4 OBDII code when the Exhaust Gas Temperature Sensor is out of factory specifications.
OBDII Code P20e4 - Exhaust Gas Temperature Sensor 2/3 Correlation Bank 1 - AutoCodes.com

P20E4 Information for specific makes

  • P20E4 CHEVROLET Exhaust Gas Temperature Sensor 2/3 Correlation Bank 1
  • P20E4 DODGE Exhaust Gas Temperature Sensor 2/3 Correlation Bank 1
  • P20E4 FORD Exhaust Gas Temperature Sensor 2/3 Correlation Bank 1
  • P20E4 GMC Exhaust Gas Temperature Sensor 2/3 Correlation Bank 1

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P20E4 Comments

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