Fault Code P0540
Code meaning, symptoms, possible causes, part number, and estimated cost.
P0540
Intake Air Heater 'A' Circuit
Code P0540 indicates a malfunction in the electrical circuit of the intake air heater 'A'. This component helps heat the air entering the engine, primarily in diesel vehicles, for easier cold starting.
Part Details
Part Name
Intake Air Heater
Reference P/N (OEM)
N/A
General part number for this fault code — not necessarily for your specific vehicle
Estimated Cost
₪400 - ₪1200
Engine Location
Intake manifold/Engine
Symptoms
- Difficulty starting the engine in cold weather
- Rough engine operation after cold start
- Increased fuel consumption (especially in winter)
- Check Engine Light on
Possible Causes
- 1Faulty intake air heater
- 2Damaged or shorted wiring
- 3Bad electrical connector
- 4Faulty control relay
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