OBD-II code · Network
U049E Invalid Data Received From Direct Ozone Reduction Catalyst Temperature Sensor
A receiving module detected implausible data from the direct ozone reduction (DOR) catalyst temperature sensor. Temperature values fail plausibility checks against engine load and ambient and are rejected.
Is it safe to drive with U049E?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyModule internal fault or sensor input drift
- PossibleSoftware version mismatch after replacement
- Less likelyGateway module routing CAN messages incorrectly
Symptoms
- Multiple warning lights may illuminate
- Affected modules may go into limp mode or shut down
- Specific functions inoperative depending on module
- Diagnostic tools may show communication faults
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Dor Catalyst Temp Sensor
Related codes
- U049BInvalid Data Received From Tachograph Module
- U049CInvalid Data Received From Battery Charger Control Module A
- U049DInvalid Data Received From Glow Plug Control Module 2
- U049FInvalid Data Received From Transmission Range Control Module
- U04A0Invalid Data Received From Engine Coolant Pump Control Module
- U04A1Invalid Data Received From Hybrid/EV Battery Interface Control Module A
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.