What does code P2029 mean?

Q: What does code P2029 mean?

Fuel Fired Heater Disabled. P2029 indicates that the powertrain control module has disabled the fuel-fired heater, typically because it detected a fault in the heater circuit or a related safety condition. The heater, which burns fuel to warm the engine coolant or cabin, is shut off to prevent damage or unsafe operation, and the driver usually sees only a warning light.

DTC codes / P20xx · Fuel and air metering and auxiliary emission controls / P2029

P2029Fuel Fired Heater Disabled

P2029 indicates that the powertrain control module has disabled the fuel-fired heater, typically because it detected a fault in the heater circuit or a related safety condition. The heater, which burns fuel to warm the engine coolant or cabin, is shut off to prevent damage or unsafe operation, and the driver usually sees only a warning light.

SystemPowertrain

Code typeGeneric (all makes)

SeverityLow

Fix difficultyIntermediate

AreaFuel and air metering and auxiliary emission controls

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.