OBD-II code · Network
U030F Software Incompatibility With Reductant Control Module
A module reports a software version mismatch with the reductant control module — typically after replacing one of the modules without programming the new unit to match the rest of the network.
Is it safe to drive with U030F?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyModule replaced without programming
- PossibleWrong part number for the vehicle
- 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
- 0.5–2 h
- Emissions test
- Likely to fail
- Parts involved
- Reductant Control Module
Related codes
- U030CSoftware Incompatibility With Reductant Quality Module
- U030DSoftware Incompatibility With NOx Sensor A
- U030ESoftware Incompatibility With NOx Sensor B
- U0310Software Incompatibility With Fuel Pump Control Module
- U0311Software Incompatibility With Drive Motor Control Module
- U0312Software Incompatibility With Battery Energy Control Module A
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.