Exhaust pressure sensor, short circuit to ground or open load
â–¶ How to fix
Check the exhaust pressure sensor, check its connectors and wires.
What you'll see
No driver-visible symptom recorded.
System reaction
The system is using exhaust pressure model. No particulate filter regeneration will be performed.
Diagnostic depth
Detection
The voltage has been too low.
Possible cause
Short circuit to ground (U31) or open load to output signal or supply.