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Engine-Codes.com | All About OBDII Engine Codes

P0541 Dodge

P0541 Dodge - Intake Air Heater Relay 1 Low

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P0541 Dodge Comments |  Add Comment
Possible causes
- Faulty Intake Air Heater Relay
- Intake Air Heater Relay harness is open or shorted
- Intake Air Heater Relay circuit poor electrical connection
Help with Possible causes What does this mean?
Tech notes
When is the code detected?
The Engine Control Module (ECM) sends a bias voltage on diagnostic circuits one and two. If this voltage is not pulled low when the relay is OFF DTC P0541 will set. The ECM will only store info on first failure, It triggers the SES light on the second failure.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P0541 Dodge Description

The Engine Control Module (ECM) uses an Intake Air Heater (IAH) to warm the incoming air for proper cylinder combustion. The ECM grounds the control coil of the IAH relay to energize the heater during cold operation.

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