P2428 — Exhaust Gas Temperature Too High Bank 1
An EGT sensor on bank 1 reports a temperature above the safety threshold for prolonged operation - typical for blocked DPF, restricted exhaust, or excessive fuelling. Risk of catalyst, DPF or turbo damage.
General code reference. Confirm the definition and diagnostic procedure for your vehicle's year, model and engine. A stored code alone does not identify a failed part.
Affected components
- Exhaust gas temperature sensor b1
- Dpf b1
Possible causes to check
These are possible checks, not a ranked diagnosis. Follow the vehicle manufacturer's test procedure before replacing parts.
- DPF blocked or active regeneration
Diagnostic notes
- The malfunction indicator lamp may illuminate
- This code can affect emissions
Related codes
Sources
Check each reference's vehicle and model-year scope. General background links do not establish which fault is most likely on your vehicle.
Diagnostic information is provided for reference only. Confirm the code with a compatible scan tool and follow the vehicle manufacturer's service procedures before replacing components.