P2604
Intake Air Heater A Circuit Range/Performance
P2604 is an OBD-II diagnostic trouble code meaning: Intake Air Heater A Circuit Range/Performance. Common causes: heating element malfunction, open or short circuit in the circuit. Estimated repair cost: $17–89.
Symptoms
- Difficulty starting the engine in cold weather
- Check Engine Light Is On
- Reduced engine power
- Increased fuel consumption
- Unstable operation at idle
Causes
- Heating element malfunction
- Open or short circuit in the circuit
- Problems with the heater relay
- Engine control unit malfunction
- Poor contact in connectors
How to Fix
- Check the heater circuit fuse
- Diagnose the resistance of the heating element
- Check the integrity of wiring and connectors
- Test the operation of the heater relay
- If necessary, replace the heating element
Related codes
Error P2604 by Vehicle Brand
FAQ
What does the P2604 code mean?
P2604 is an OBD-II diagnostic trouble code that indicates: Intake Air Heater A Circuit Range/Performance
What causes a P2604 error code?
The most common causes of P2604 include: Heating element malfunction; Open or short circuit in the circuit; Problems with the heater relay; Engine control unit malfunction.
How do I fix a P2604 diagnostic trouble code?
To fix P2604: Check the heater circuit fuse. Diagnose the resistance of the heating element. Check the integrity of wiring and connectors. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P2604?
Yes, but get it checked soon
How much does it cost to fix P2604?
The estimated repair cost for P2604 is $17–89. Actual cost depends on your vehicle, location, and labor rates.
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