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P0545 — Exhaust Gas Temperature Sensor Circuit Low Bank 1
CautionAftertreatmentLimp to the next safe stop
Seen on: Heavy Truck
Exhaust Gas Temperature Sensor Circuit Low Bank 1. Common causes: EGT sensor shorted bank 1.
Don't risk it — get a diesel tech on the truck.
Your code rides along, so nearby mechanics see the fault before they quote you.
How serious is it?
Caution. Limp to the next safe stop.
Most likely causes
- EGT sensor shorted bank 1
- Wiring short
- failed sensor
First moves (roadside)
- Check EGT signal wire for ground fault
- replace sensor
FAQ
What does P0545 mean?
Exhaust Gas Temperature Sensor Circuit Low Bank 1. Common causes: EGT sensor shorted bank 1.
How serious is P0545?
Caution — Limp to the next safe stop.
What's the most likely cause of P0545?
The most common cause is: EGT sensor shorted bank 1. Other possibilities include Wiring short; failed sensor.
Can I keep driving with P0545?
Limp to the next safe stop. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Throwing this code right now?
Find a mechanic or related guides
General diagnostic guidance for diesel engines (Cummins, Detroit, PACCAR, Volvo, Mack and more). Not a substitute for a scan-tool diagnosis on your specific truck.