ezOBD2 - Free OBD2 Code Lookup and Check Engine Light Diagnostic Tool

Diagnose Your Check Engine Light

Enter OBDII code below:

Code P2429

Symptoms

• Check Engine Light is on

• Decreased engine performance

• Poor fuel economy

Common Causes

• Faulty exhaust gas temperature sensor

• Exhaust leaks

• Catalytic converter malfunction

Glossary

ECM: Engine Control Module

Catalytic Converter: A device that reduces toxic gases and pollutants in exhaust gas

Related Codes

• P2428

• P2430

Official description

Exhaust Gas Temperature Too High Bank 2

Laymans terms

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.

Explanation

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.

Technical description

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.

Diagnosis steps

• Inspect the exhaust gas temperature sensor and wiring for damage.

• Check for exhaust leaks.

• Test the catalytic converter for proper operation.

Repair procedures

• Replace the faulty exhaust gas temperature sensor.

• Repair any exhaust leaks.

• Replace the catalytic converter if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Wrench set

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Tundra

Preventive measures

• Regularly inspect exhaust components.

• Ensure proper engine maintenance.

• Use recommended fuel types.

Error code type

Engine Performance

User experience recommendations

• Avoid driving aggressively until the issue is resolved.

• Schedule a diagnostic check with a professional mechanic.

Warranty information

Check with your vehicle manufacturer for warranty coverage on exhaust components.

Historical data

This code has been more prevalent in vehicles with turbocharged engines due to higher exhaust temperatures.

Urgency level

Moderate – Should be addressed soon to avoid potential damage to the catalytic converter.

Legal and safety notice

Driving with an unresolved P2429 code may lead to increased emissions and potential damage to the catalytic converter.

Testing conditions

• Engine at normal operating temperature

• Vehicle driven under typical conditions

Component location

The exhaust gas temperature sensor is located in the exhaust system, typically near the catalytic converter on bank 2.

FAQs

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.

Last updated: Apr 16, 2026 • Source: internal database
🌙