Diesel Particulate Filter Ash Loading High
2009-2013 Audi A3 2.0L TDI
Description
The DPF ash accumulation (non-combustible residue from oil) has reached a level requiring cleaning or replacement. Ash cannot be removed by regeneration.
Symptoms
- DPF warning light
- Reduced engine performance
- Increased exhaust backpressure
- Regeneration less effective
- Fuel economy declining
- DPF replacement or cleaning message
Common Causes
- Normal ash accumulation over mileage
- Excessive oil consumption increasing ash
- Wrong oil specification (high ash)
- Extended DPF service interval
- Frequent regeneration depositing more ash
Diagnostic Steps
- Measure DPF differential pressure at idle
- Compare to ash loading model in ECM
- Check engine oil consumption rate
- Verify oil specification (low SAPS)
- Review DPF mileage and service history
Repair Notes
DPF professional cleaning (baking/pneumatic) or replacement. Use low-SAPS oil per manufacturer specification to minimize future ash buildup. Address any oil consumption issues.
Related Codes
Other Powertrain Codes
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P3893 on Other Vehicles
Common Questions
What does code P3893 mean on a 2009-2013 Audi A3?
P3893 stands for "Diesel Particulate Filter Ash Loading High". The DPF ash accumulation (non-combustible residue from oil) has reached a level requiring cleaning or replacement. Ash cannot be removed by regeneration.
What are the symptoms of P3893 on a Audi A3?
Common symptoms of P3893 include: DPF warning light, Reduced engine performance, Increased exhaust backpressure, Regeneration less effective, Fuel economy declining, DPF replacement or cleaning message.
What causes P3893 on a 2009-2013 Audi A3?
Common causes of P3893 include: Normal ash accumulation over mileage, Excessive oil consumption increasing ash, Wrong oil specification (high ash), Extended DPF service interval, Frequent regeneration depositing more ash.