Powertrain
generic / SAE
P2399
Diesel Intake Air Flow B Position Sensor Circuit High
Same as P2396 with the signal voltage above the plausible range. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP2
Range / number3 / 99
Possible causes
- Signal shorted to supply high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 150–500 €
- Estimated time: 0.8–2 h
- Component: diesel intake air flow b position sensor
- MIL / check engine light
- emissions-relevant
Sources
References
sae:J2012