Powertrain, generic (extended)

P2BAF NOx System Driver Inducement Active

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2BAF does not name a faulty part; it states that the driver inducement of the NOx control system has been activated. Regulation (EU) 2017/1151 Annex XVI requires such an inducement once reagent is lacking, of wrong quality, under-consumed or not dosed, typically counting down to a blocked engine restart; the reason and the distance driven with it go into non-erasable records kept for 30,000 km or 800 days. FCA bulletin 08-103-19 lists P2BAF-00 as Driver Inducement Active on the 2020 Jeep Compass 2.0 diesel, there caused by body control module software. Jaguar Land Rover lists P2BAF with P2BAE as DEF inducement codes next to root codes like P2BA9 or P208B. Repair the root code first; P2BAF then clears. P241D, by contrast, signals a forced shutdown.

Likely causes

Active SCR fault (DEF quality, dosing, level) that started the inducement
DEF tank run empty
Control module software fault, e.g. BCM on Jeep Compass (FCA 08-103-19)
Root cause fixed but the clearing monitor has not yet run

Symptoms

  • Countdown message until no restart
  • MIL and DEF system warning on
  • Speed or power limited, engine may not restart

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€0–1,500
Time0.5–4 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

scr systemecm

Related codes

P2BAEP241DP2BA9P208BP2BA7

References: static.nhtsa.gov, static.nhtsa.gov, legislation.gov.uk.