Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means the car's computer thinks the exhaust is getting too hot on one side of the engine. Imagine if you were cooking and one side of the pan was way hotter than the other; it could burn the food. This is similar, but for a car.
The P2429 code is triggered when the engine control module (ECM) detects that the exhaust gas temperature sensor for bank 2 is reporting a temperature that is higher than the specified limit.
The exhaust gas temperature sensor monitors the temperature of the exhaust gases exiting the engine. If the temperature exceeds the threshold for a prolonged period, the ECM will set the P2429 code. Bank 2 refers to the side of the engine that does not contain cylinder 1, typically in V-type engines.
• Check Engine Light is on
• Decreased engine performance
• Poor fuel economy
• Faulty exhaust gas temperature sensor
• Exhaust leaks
• Catalytic converter malfunction
ECM: Engine Control Module
Catalytic Converter: A device that reduces toxic gases and pollutants in exhaust gas
• Inspect the exhaust gas temperature sensor and wiring for damage.
• Check for exhaust leaks.
• Test the catalytic converter for proper operation.
• Replace the faulty exhaust gas temperature sensor.
• Repair any exhaust leaks.
• Replace the catalytic converter if necessary.
• OBD-II scanner
• Multimeter
• Wrench set
$150 - $500
Moderate
• Ford F-150
• Chevrolet Silverado
• Toyota Tundra
• Regularly inspect exhaust components.
• Ensure proper engine maintenance.
• Use recommended fuel types.
Engine Performance
• Avoid driving aggressively until the issue is resolved.
• Schedule a diagnostic check with a professional mechanic.
Check with your vehicle manufacturer for warranty coverage on exhaust components.
This code has been more prevalent in vehicles with turbocharged engines due to higher exhaust temperatures.
Moderate – Should be addressed soon to avoid potential damage to the catalytic converter.
Driving with an unresolved P2429 code may lead to increased emissions and potential damage to the catalytic converter.
• Engine at normal operating temperature
• Vehicle driven under typical conditions
The exhaust gas temperature sensor is located in the exhaust system, typically near the catalytic converter on bank 2.
Q: Can I drive with a P2429 code?
A: It's not recommended to drive for extended periods with this code, as it may lead to further damage.
Q: How can I reset the P2429 code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is fixed first.
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Universal · Digital multimeter
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Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.
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Universal · Wire connectors and repair kit
Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.
Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.
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Fitment Required · Vehicle-fitment part
Relevant when catalyst-efficiency or emissions faults persist after proper diagnosis.
Catalyst-efficiency faults sometimes point toward converter problems after proper testing.
Catalytic converters are highly vehicle-specific and should not be purchased by code alone.
View options on AmazonThese parts may be related to this fault category, but a code by itself does not confirm exact fitment or guarantee that replacing a part will solve the problem.