P0541

2017-10-10

Description:

  • The fault code P0541 indicates that there is an issue with the A circuit of the intake air heater, which is designed to warm the air entering the engine. This issue may cause the engine to run poorly, smoke, or have difficulty starting.

Possible Symptoms:

  • Illuminated check engine light

  • Poor engine performance or reduced power

  • Engine may smoke

  • Difficulty starting the engine in cold weather

Possible Causes:

  • Failed or faulty intake air heater relay

  • Short or open circuit in the intake air heater wiring

  • Failed or faulty intake air temperature (IAT) sensor

  • Failed or faulty engine control module (ECM)

Related Parts:

  • Air Heater: Air heater warms the incoming air if it is cold. Problems lead to poor fuel economy

Possible Solutions:

  • Replace the intake air heater relay

  • Check and repair any damaged wiring in the intake air heater circuit

  • Replace the intake air temperature (IAT) sensor if necessary

  • Replace the engine control module (ECM) if necessary

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