Error code
OBD2 P2029
OBD2P2029
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
Fuel Fired Heater Disabled.
Severity
moderateYes, but the auxiliary heating system will not work.
Summary
Code P2029 indicates that the auxiliary heater (fuel-fired) system is disabled due to a detected fault or malfunction in the system.
Common Causes
- Failure of sensors monitoring cabin air quality
- Damaged, shorted, disconnected, or corroded wiring and connectors
- Thermostat or timer failure
- Abnormal voltages in control circuit
- Blower/fan motor failure
- Fuel igniter failure
- Defects in fuel feed system
Fixes
FAQ
Where is the fuel-fired heater located?
The location varies by vehicle, but it can be in the engine compartment or under the vehicle. Refer to your manual for specific details.
What causes P2029?
Common causes include sensor failures, wiring issues, thermostat/timer failure, abnormal voltages, blower motor problems, fuel igniter failure, and defects in the fuel feed system.
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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