Exhaust Gas Temperature Too High Bank 2
What it means
P2429 means the exhaust gas temperature (EGT) sensor on bank 2 reported a temperature above the safe limit. That can be a real overheating condition — from a rich mixture, misfire, restricted exhaust, or a particulate-filter regeneration issue — or a sensor reading high when the exhaust is actually normal. Because genuinely high exhaust temperatures can damage the catalyst, DPF, or turbo, this one is worth diagnosing promptly.
Can I keep driving? Ease off — genuinely high exhaust temperatures can damage the catalyst, DPF, or turbo, so avoid heavy loads until it's diagnosed.
Common symptoms
What you'll notice
- Check-engine light on
- Possible reduced power or limp mode
- Hot or unusual exhaust smell
- On diesels, aborted or overly frequent DPF regeneration
Common causes
Most likely first
- Genuinely high exhaust temperature (rich mixture, retarded timing, or a misfire)Likely
- Restricted exhaust or an overloaded/regenerating particulate filterCommon
- Faulty exhaust gas temperature sensor reading high on bank 2Common
- Damaged wiring or a poor connector at the EGT sensorLess often
- EGR or fueling fault raising combustion temperaturesLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame and compare EGT readings with actual exhaust temperature to see if the reading is real.
- Check for a misfire, rich condition, or exhaust restriction that would raise temperatures.
- Inspect the EGT sensor connector and wiring on bank 2.
- Replace the EGT sensor if it reads high while the exhaust is actually normal.
- Address any underlying fueling/EGR fault, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2429?+
Can I just clear P2429?+
Related codes
Often seen with P2429
Read & clear P2429 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.