P2029 - OBD Trouble Code

The coolant temperature sensors of your vehicle are used to determine the heater temperature. It’s the task of the PCM to be monitoring these temperature sensors so that the fuel fired heater is working as needed. When the PCM is unable to detect the correct temperature differential between the coolant entering the fuel fired heater and the coolant that’s leaving the heater, it will set the P2029 code. The check engine light that you’re noticing will also be illuminated after this. In certain vehicle it takes few failed ignition cycles for the MIL (Malfunction Indicator Light) to be illuminated.

What causes this problem with the Fuel Fired Heater Disabled?

• Defect in the temperature sensor (air or coolant)
• Poor fuel fired heater injector
• Malfunction of the fuel fired heater burner/igniter
• The wiring of the fuel fired heater circuit is shorted or open
• Damaged connectors
• Improper PCM

1. Climate Control Module - Is used to regulate the temperature of your vehicle. You shouldn’t delay fixing the issues, otherwise it can cause other damages too. Fix the P2029 code by either repairing the damages found or by replacing the components. You can find the best ones for your vehicle at PartsAvatar. Order Today!
2. Fan Motor - The cooling fan motor helps in protecting the engine from overheating by supporting the the cooling fan. Repair or replace from PartsAvatar as needed.
3. Wiring - Fix the wires that have been damaged through repairs and see if the P2029 code goes away. If it doesn't you will have to replace them. We have a wide variety you can choose from, and it’s all online! Order now!
4. Powertrain Control Module - It is the central part of your vehicle, as it controls the functioning of all other components. Repair or replace it as needed and get rid of P2029 code. Find the PCM compatible with your vehicle on PartsAvatar and get free shipping on orders above CAD $99.
5. Connectors - Replace the damaged connectors cause they can be reason to other components getting damaged. You can find replacements easily from the comfort of your home on our website and order. Track your shipment the whole time till it reaches you at your doorstep.
6. Diagnostic Tools - Having accurate and the right tools for diagnosis is very important. Replace damaged tools or simply buy the ones you don’t have from us. Have your order delivered to you in just few days!
7. Coolant temperature sensor - Is responsible for keeping a tab on the coolant temperature. You will need to see if there are any damages present and repair them accordingly to get rid of the P2029 error. If that doesn't help, simple replace by finding the best one compatible with your vehicle.

It is essential to know the symptoms of an issue as only then you would be able to solve the problem. So that’s why we have listed out some major symptoms of OBD Code P2029 here:

Common Symptoms

• Lack of heat present in passenger compartment
• Passenger compartment has excessive heat
• Temporarily disables climate control blower
• No symptoms can be noticed

It is very important to fix the fault code P2029. So here are some ways with which you can correct this issue:

• Repair or find a replacement climate control blowers
• Repair if possible otherwise replace faulty wiring, circuits and connectors
• Repair or replace the temperature sensor
• Repair or replace the faulty PCM

There is no need to be anxious as Parts Avatar – Car Parts Online is here to help you out! We have high grade Blower, Fan Motor, Fuel Fired Heater System, Wiring, Connectors, Sensors and a lot more for our precious customers.

It is essential to diagnose this fault code. Here are some steps which a mechanic should follow for diagnosing the problem that triggered a P2029 code to be stored:

• Start by getting all the tools required for the diagnosis, you will need a diagnostic scanner, digital volt/ohmmeter (DVOM), and a source of vehicle specific diagnostic information. Using the vehicle information source you can get the Technical Service Bulletin and match the code to the symptoms exhibited by your vehicle. Make sure you match your vehicle's make, model, engine correctly with the TSB. The TSB can be a great source of information for locating various components and parts through the diagnosis procedure.
• Now connect the scanner to the diagnostic port of your vehicle and retrive all the codes present and freeze frame the data. Make a note of it too, these will help you understand if there’s an intermittent condition present as well. Once you have done that you can proceed to clearing the codes and taking your vehicle for a test drive. If the PCM enters readiness mode then you’re likely having an intermittent condition, these unfortunately need to worsen to be able to accurately diagnose them. If the code rests you can continue your diagnosis.
• Look through your vehicles information source for diagnostic flow-charts, connect face views, component locations, connector pinout charts and all the procedures for the tests needed. If you find that the fuel fired heater is disabled, you will need to clear the code prior to testing. Using the DVOM test the temperature sensors and see if they’re as per the specifications of the manufacturer. Those sensors that aren’t within the maximum permissible parameters will have to be concluded as defective. Using the same vehicle information source and the DVOM test the fuel fired heater injectors and igniters. Ensure you do this with the system activated, if you’re unable to do so due to climatic reasons you will have to use the scanner to manually activate.
• Upon diagnosis if you find that the other components are functional while the system switches you will have to use the DVOM to test the input and output signal circuits from the fuse panel, ignition switch and PCM. Remember to disconnect all the controllers before using the DVOM for the test.

Common Mistakes When Diagnosing the P2029 code

• Not following the diagnostic steps in order
• Overlooking fault with the electrical system and connectors and not repairing them
• Following the wrong TSB

P2030 - Fuel Fired Heater Performance