P2029 Fault Code

Fuel Fired Heater Disabled

• What does that mean?
• Symptoms
• Causes
• Solutions

The Fuel Fired Heater Disabled fault code indicates that the vehicle's auxiliary heating system has been automatically turned off due to a malfunction. This system is essential for providing additional heat to the cabin and preventing engine overheating in cold conditions. When this code is triggered, it can affect the overall comfort and safety of the vehicle during winter months.

What are the symptoms of the P2029 code?

Drivers may notice several symptoms associated with this fault code:

• Cabin heating not functioning properly
• Unusual noises from the heater or fuel system
• Warning lights illuminated on the dashboard
• Decreased fuel efficiency
• Engine temperature fluctuating more than usual

What causes the P2029 code?

Several factors can lead to this fault code being triggered, including:

• Insufficient fuel supply to the heater
• Blocked or damaged fuel lines
• Malfunctioning fuel pump or injector
• Electrical issues such as blown fuses or damaged wiring
• Overheating sensors detecting unsafe conditions
• Faulty heater control module

How to fix P2029?

To resolve the Fuel Fired Heater Disabled issue, follow these steps:

1. Inspect the fuel lines and connections for any blockages or damage.
2. Check the fuel pump and injector for proper operation.
3. Examine electrical circuits for blown fuses or frayed wiring.
4. Replace any faulty components, such as the heater control module or sensors.
5. Clear any error codes from the vehicle’s computer and perform a function test to confirm normal operation.