Exhaust Temperature Too High For Particulate Filter Regeneration Bank 1

Check these first

• Bank 1 exhaust temperature above the safe regeneration range
• Overfueling on bank 1 raising exhaust temperature
• A failed bank 1 EGT sensor reading high
• A restricted bank 1 exhaust concentrating heat

What to do next

1. Read bank 1 exhaust gas temperature on a scan tool
2. Check bank 1 for an overfueling or misfire fault
3. Inspect the bank 1 exhaust for restriction
4. Verify the bank 1 EGT sensor against a known reading
5. Repair the overfueling fault or replace the bank 1 EGT sensor as found
6. Clear the code and retest

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