P2002
PPowertrainDPF Efficiency Below Threshold (Bank 1)
What does this code mean?
Severity : HighP2002 indicates that the diesel particulate filter (DPF) efficiency on bank 1 is below the expected threshold. The ECU monitors differential pressure across the filter and concludes that soot is no longer being trapped properly. The cause can be a cracked or damaged filter, or a reading distorted by the sensor or its hoses.
Symptoms
- Check engine or DPF warning light on.
- Visible black smoke from the exhaust.
- Possible limp mode with reduced power.
- Soot visible at the tailpipe.
Possible causes
- Cracked, melted or damaged DPF.
- Differential pressure sensor hoses disconnected, split or blocked.
- Faulty differential pressure sensor.
- Exhaust leak upstream of the filter.
- Excess engine smoke from injection or turbo faults.
Diagnosis and repair
- Inspect the differential pressure sensor and its hoses.
- Compare differential pressure in live data at idle and under load.
- Check for exhaust leaks and inspect the filter condition.
- Replace the sensor, hoses or DPF according to the diagnosis.
- Clear the code and road test to confirm.
Is this vehicle in your workshop?
Upload the ORI file: it is processed automatically in a few minutes, 24/7, and a calibration engineer takes over complex cases during opening hours.
Are you a driver?
Find a garage or a diagnostics and remapping specialist near you.
Find a pro on ChiptuneMAPCode details
Code
P2002
Category
Powertrain
Prefix
P
Standard
OBD-II / SAE J2012