Exhaust Gas Temperature Too High Bank 2
The P2429 code indicates that the exhaust gas temperature (EGT) sensor on Bank 2 has detected a temperature exceeding the maximum allowable threshold. This can be caused by a faulty EGT sensor, a restricted exhaust system (e.g., clogged catalytic converter or DPF), or an engine running too lean. High exhaust temperatures can damage catalytic converters and other exhaust components.
01. Most Common Causes
- Faulty exhaust gas temperature sensor Bank 2
- Clogged catalytic converter or diesel particulate filter (DPF)
- Engine running lean (excess oxygen in exhaust)
- Exhaust leak before the sensor
02. Symptoms You Will Notice
- Check Engine Light on
- Reduced engine performance or power
- Possible overheating of exhaust components
- Poor fuel economy
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect EGT sensor wiring and connector for damage.
Step 3: Compare EGT sensor readings with Bank 1 using a scan tool.
Step 4: Check for exhaust restrictions (backpressure test).
Step 5: Test the EGT sensor resistance and voltage output.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended to drive long distances as high exhaust temperatures can damage the catalytic converter or DPF, leading to costly repairs.
How much does it cost to fix?▼
Replacing an EGT sensor typically costs $150-$400 including parts and labor. If the catalytic converter or DPF is clogged, costs can exceed $1,000.