Error code
OBD2 P2604
OBD2P2604
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Intake Air Heater 'A' Circuit Range/Performance.
Severity
moderateCan drive but may experience reduced performance or increased emissions.
Summary
P2604 indicates an issue with the range or performance of the intake air heater 'A' circuit, which is part of the engine's heating system.
Common Causes
- Wiring issues
- Intake air heater relay failure
- Faulty intake air heater
Fixes
FAQ
What does P2604 mean?
P2604 indicates a problem with the range or performance of the intake air heater 'A' circuit, which is part of the engine's heating system.
How do I fix P2604?
Fixing P2604 typically involves checking and repairing wiring issues, replacing the intake air heater relay or the faulty intake air heater itself.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
More OBD2 codes
- P2600Coolant Pump Control Circuit/Open
- P2601Coolant Pump Control Circuit Range/Performance
- P2602Coolant Pump Control Circuit Low
- P2603Coolant Pump Control Circuit High
- P2605Intake Air Heater 'A' Circuit/Open
- P2606Intake Air Heater 'B' Circuit Range/Performance
- P2607Intake Air Heater 'B' Circuit Low
- P2608Intake Air Heater 'B' Circuit High
- P2609Intake Air Heater System Performance
- P2610ECM/PCM Internal Engine Off Timer Performance
- P2611A/C Refrigerant Distribution Valve Control Circuit/Open
- P2612A/C Refrigerant Distribution Valve Control Circuit Low