P229F
NOx Sensor Circuit Range/Performance (Bank 1 Sensor 2)
System: AdBlue/SCR
Severity: medium
What does P229F mean?
The DTC P229F (NOx Sensor Circuit Range/Performance (Bank 1 Sensor 2)) is a fault code stored by the ECU when it detects a NOx sensor B1S2 condition in the adblue/scr subsystem. It is commonly seen on European and Asian vehicles using Bosch, Continental, Siemens or Denso ECUs.
Common causes of P229F
- Failed downstream NOx sensor
- Sensor contamination
- Wiring fault
How to fix P229F
NOx sensors are expensive (€300-700). Verify wiring before replacing. DaVinci can disable monitoring on tuned diesels (where legal).
Tuning approach with DaVinci Deluxe · Cloud Edition
For P229F, DaVinci Deluxe · Cloud Edition offers the following ECU map adjustments and software solutions:
- NOx monitor disable
- AdBlue/SCR Off
- Disable DTC logging
Need to fix P229F on your ECU?
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