P040F - Exhaust Gas Recirculation Temperature Sensor 'A'/'B' Correlation

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
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P040F Possible Causes

  • Faulty Exhaust Gas Recirculation Temperature Sensor 'A' or 'B'
  • Exhaust Gas Recirculation Temperature Sensor 'A' or 'B' harness is open or shorted
  • Exhaust Gas Recirculation Temperature Sensor 'A' or 'B' circuit poor electrical connection

How do I fix code P040F

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.

Cost of diagnosing the P040F code

Labor: 1.0

The cost of diagnosing the P040F 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)

P040f Description

The Engine Control Module (ECM) monitors the Exhaust Gas Recirculation (EGR) Temperature Sensor 'A' and 'B' Circuit Performance, which measures the temperature of the exhaust gas. The EGR Temperature Sensor functions by increasing the resistance with increasing exhaust gas temperature. The ECM sets the OBDII code when the EGR Temperature Sensor signal is not to factory specifications.
OBDII Code P040f - Exhaust Gas Recirculation Temperature Sensor 'A'/'B' Correlation - AutoCodes.com

P040F More Information

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Information for specific makes

  • P040F CHEVROLET Exhaust Gas Recirculation Temperature Sensor 'A'/'B' Correlation
  • P040F DODGE Exhaust Gas Recirculation Temperature Sensor 'A'/'B' Correlation
  • P040F FORD Exhaust Gas Recirculation Temperature Sensor 'A'/'B' Correlation
  • P040F GMC Exhaust Gas Recirculation Temperature Sensor 'A'/'B' Correlation

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