OBD-II code · Powertrain (generic, extended)
P241E Reductant Heater Coolant Control Valve Stuck Closed
The valve that routes engine coolant to heat the AdBlue lines is stuck closed - AdBlue lines do not warm up and may freeze in cold weather, blocking dosing.
Is it safe to drive with P241E?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyValve stuck closed
- Less likelyCarbon or debris buildup preventing free movement
- Less likelyComponent wear with age - mechanical play
Symptoms
- Check engine light or NOx warning on
- AdBlue/DEF level or quality warning
- Possible no-start countdown after ignore period
- Failed emissions inspection (NOx)
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Best left to a mechanic
- Typical labour
- 1–3 h
- Emissions test
- Likely to fail
- Parts involved
- Reductant Coolant Control Valve
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.