OBD-II code · Powertrain (generic, extended)
P214F Reductant Heater A Current Too High
DEF heater A current draw exceeds the upper threshold — typically a partial short in the heating element.
Is it safe to drive with P214F?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyElement partially shorted
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
- 0.7–3 h
- Emissions test
- Likely to fail
- Parts involved
- Reductant Line Heater A
Related codes
- P215FReductant Heater D Current Too High
- P221DReductant Heater B Current Too High
- P221FReductant Heater C Current Too High
- P214CSCR NOx Catalyst Outlet Temperature Too High
- P214DSCR NOx Catalyst Outlet Temperature Too High During Particulate Filter Regeneration
- P214EReductant Pump A Current Too High
- P2150Fuel Injector Group B Supply Voltage Circuit Low
- P2151Fuel Injector Group B Supply Voltage Circuit High
- P2152Fuel Injector Group C Supply Voltage Circuit/Open
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.