Exhaust Gas Temperature Too High - Bank 2
What does P2429 mean?
The P2429 code means the vehicle's onboard diagnostic system has detected: Exhaust Gas Temperature Too High - Bank 2. This is a critical severity code.
Common Symptoms
- Check Engine Light illuminated
- Engine in limp mode with reduced power
- Exhaust system extremely hot
- Burning or acrid smell
- Catalytic converter may glow red
Probable Causes (Ranked by Likelihood)
- Rich-running condition on bank 2 overheating catalyst Very High
- Misfire on bank 2 cylinder causing unburned fuel in exhaust High
- Restricted exhaust on bank 2 Moderate
- Failed EGT sensor reading falsely high Moderate
Step-by-Step Diagnostic Procedure
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Check for misfire codes on bank 2 cylinders
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Monitor bank 2 exhaust gas temperature with scan tool
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Inspect bank 2 fuel injectors for leaking conditions
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Check for exhaust restrictions on bank 2
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Verify EGT sensor accuracy with an infrared thermometer
Frequently Asked Questions
Can I drive with code P2429?
No, stop driving immediately. Overheated exhaust components are a fire hazard and can cause severe damage to the catalytic converter and surrounding parts.
What causes P2429?
Usually a misfire or rich condition on bank 2 causing unburned fuel to ignite in the catalytic converter. Fix the root cause before replacing the catalyst.
Is P2429 expensive to fix?
Costs range from $200 to $1500. The root cause (misfire, leaking injector) must be fixed first. Catalytic converter replacement adds to the total cost.