P0542 Volvo Intake Air Heater Relay 1 High

P0542 Volvo Intake Air Heater Relay 1 High

Possible causes
– Faulty Intake Air Heater Relay
– Intake Air Heater Relay harness is open or shorted
– Intake Air Heater Relay circuit poor electrical connection
What about the obd code?
The Engine Control Module (ECM) sends a bias voltage on diagnostic circuits one and two. If this voltage is high with the relay ON, DTC P0542 Volvo will set. The ECM will only store info on first failure, It triggers the SES light on the second failure.
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P0542 Volvo 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.

Volvo Vehicle:Volvo C70,Volvo S40,Volvo XC90,Volvo XC70,Volvo XC60,Volvo V70,Volvo V50,Volvo V40,Volvo S90,Volvo S80,Volvo S60
CategoriesUncategorized