P20F6
P20F6 on Peugeot — White smoke and a whitish deposit on the tailpipe, with the AdBlue, engine and service lights on
Code P20F6 indicates that the injector metering AdBlue into the exhaust line is stuck open instead of closing: the reductant system is dosing urea in an uncontrolled way. On the Peugeot 208 1.6 HDI it is recognised by white smoke and a whitish deposit on the tailpipe.
- System
- Exhaust emissions
- Component
- Urea (AdBlue) injector
- Fault
- Heavy white smoke from the exhaust with a whitish deposit on the tailpipe; the engine warning, service and AdBlue lights are on the cluster.
- Typical symptoms
-
- Heavy white smoke from the exhaust
- Whitish deposit on the tailpipe
- Engine warning, service and AdBlue lights on
- ‘AdBlue - Emission control fault’ message on the central display
- ‘Engine fault: have the vehicle repaired’ message on the central display
- Vehicles affected
-
- Peugeot 208 (C) 1.6 HDI
- Main code
-
- P20F6 Reductant system injector, bank 1 - stuck open
- Related codes
-
- P20EE NOx sensor, bank 1 - poor efficiency
- P2463 Diesel particulate filter clogged
On this fault the diagnostic tool often returns several codes together.
- Solution
-
See the repair procedure verified on Sema Repair.
The cause and the repair are on Sema Repair
On Sema Repair this code is linked to verified case studies, with the confirmed cause case by case, the job step by step, indicative times, the manufacturer's notes and a photograph of the component with the point of intervention highlighted.