P0545 — Exhaust Gas Temperature Sensor Circuit Low Bank 1
What it means: Exhaust Gas Temperature Sensor Circuit Low Bank 1.
How serious / can you keep driving: Caution. Limp to the next safe stop.
Check first: Check EGT signal wire for ground fault
Don't risk it — look up listed providers near you and give them this code when you call.
Listed providers nearest Baltimore, MD
Closest first. Tell them P0545 and what the truck is doing. RoadService.app lists these providers and does not employ them or carry out the repair.
- 0.0 mi away — based in Baltimore, MD · (443) 680-6789
- 0.0 mi away — based in Baltimore, MD · (410) 544-3888
- 24 hour Mobile Diesel Truck Engine Repair DEF Repairs On Site Services Road Service Laptop Diagnostic Tractors & Dump Truck☎ Call0.0 mi away — based in Baltimore, MD · (443) 591-3631
Seen on: Heavy Truck
What P0545 means
Exhaust Gas Temperature Sensor Circuit Low Bank 1. Common causes: EGT sensor shorted bank 1.
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
Exhaust Gas Temperature Sensor Circuit Low Bank 1. Common causes: EGT sensor shorted bank 1.
Caution — Limp to the next safe stop.
The most common cause is: EGT sensor shorted bank 1. Other possibilities include Wiring short; failed sensor.
Limp to the next safe stop. When in doubt, get a qualified mobile diesel tech on the truck before continuing.
Related codes
Codes that commonly appear alongside P0545, or share the same subsystem.
- SCR Operator Inducement — Severe Derate Active (SPN 5246 FMI 0)
- Aftertreatment 1 Diesel Particulate Filter Differential Pressure - Data Valid But Above Normal Operating Range, Most Severe Level (DPF severely restricted / plugged) (SPN 3251 FMI 0)
- Aftertreatment 1 Diesel Exhaust Fluid Quality - Data Valid But Below Normal Operating Range, Most Severe Level (DEF quality/concentration incorrect) (SPN 4364 FMI 1)
- DPF Differential Pressure — Data Erratic (SPN 3251 FMI 2)
- DEF Dosing Unit — Not Responding Properly (SPN 3361 FMI 7)
- SCR Conversion Efficiency — Below Threshold (SPN 4364 FMI 18)
- DEF Quality — Out of Spec (SPN 4094 FMI 31)
- EGR Temperature — Too High (SPN 412 FMI 0)
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.