OBD
P0541
Intake Air Heater A Circuit Low
What it means
P0541 means Intake Air Heater A Circuit Low.
Check these first
- A failed intake air heater A element
- A short to ground in the heater wiring
- Water in the heater connector
- Low battery voltage
- A bad heater relay or fuse
What to do next
- Check the heater fuse and relay
- Test the heater circuit for a short to ground
- Inspect the connector for water damage
- Check battery voltage
- Replace the heater element if the circuit is shorted
- Clear the code and retest
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Updated
Generic SAE J2012 definition. Last updated 2026-10-10.