OBD-II code · Powertrain (generic)
P0545 Exhaust Gas Temperature Sensor Bank 1 Sensor 1 Low
The exhaust gas temperature sensor signal at bank 1, sensor 1 is below the lower diagnostic threshold. Indicates short to ground or sensor fault.
Is it safe to drive with P0545?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyEGT sensor internally faulty
- PossibleSignal wire shorted to ground
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–2 h
- Emissions test
- Likely to fail
- Parts involved
- Exhaust Gas Temp Sensor, Sensor Wiring
Related codes
- P0546Exhaust Gas Temperature Sensor Bank 1 Sensor 1 High
- P0542Intake Air Heater A Circuit High
- P0543Intake Air Heater A Circuit Open
- P0544Exhaust Gas Temperature Sensor Circuit Bank 1 Sensor 1
- P0547Exhaust Gas Temperature Sensor Circuit Bank 2 Sensor 1
- P0548Exhaust Gas Temperature Sensor Circuit Low Bank 2 Sensor 1
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.