OBD-II code · Powertrain (generic, extended)
P2062 Reductant/Regeneration Supply Control Circuit/Open
The control line that energises the DEF supply pump or regeneration heating circuit is open — no continuity through the load or harness.
Is it safe to drive with P2062?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyOpen winding
- PossibleOpen wire
- Less likelyPin pushed back out of connector body
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
- 0.8–3 h
- Emissions test
- Likely to fail
- Parts involved
- Reductant Supply Pump, Reductant Supply Relay
Related codes
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.