P1471 Code - Diesel Particulate Filter Regeneration Insufficient
Quick Answer
P1471 indicates Diesel Particulate Filter Regeneration Insufficient. Common causes include Excessive ash accumulation in filter, Faulty MAF sensor, Exhaust differential pressure sensor fault. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1471 indicates Diesel Particulate Filter Regeneration Insufficient.
- Common causes
- Common causes include Excessive ash accumulation in filter, Faulty MAF sensor, Exhaust differential pressure sensor fault.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1471 Description
What are the Possible Causes of the DTC P1471?
- Excessive ash accumulation in filter
- Faulty MAF sensor
- Exhaust differential pressure sensor fault
- Modified exhaust system
- Faulty EGT sensor
How to Fix the DTC P1471?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1471 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the P1471 code?
Need more information on how to fix the P1471 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1471 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P1471 Audi — EVAP Control System LDP Circuit Short to Positive
- P1471 Isuzu — Diesel Particulate Filter Regeneration Insufficient
- P1471 Land Rover — Variable Inlet Manifold Motor 1 Short Circuit To Battery
- P1471 Volkswagen — EVAP Control System LDP Circuit Short to Positive
Frequently Asked Questions about P1471 Code
1. What are the common symptoms of OBDII code P1471 related to Diesel Particulate Filter Regeneration Insufficient?
- Common symptoms include reduced engine performance, increased exhaust emissions, and the presence of a warning light on the dashboard.
2. What are the possible causes of OBDII code P1471 indicating Diesel Particulate Filter Regeneration Insufficient?
- Causes may include a faulty diesel particulate filter (DPF), issues with the exhaust gas recirculation (EGR) system, sensor malfunctions, or clogged filters.
3. How can I diagnose the root cause of OBDII code P1471 for Diesel Particulate Filter Regeneration Insufficient?
- To diagnose the issue, it is recommended to perform a thorough inspection of the DPF system, check sensor readings, and scan for any related codes to pinpoint the exact cause.
4. What are some potential repair tips for resolving OBDII code P1471 indicating Diesel Particulate Filter Regeneration Insufficient?
- Repair tips may include cleaning or replacing the DPF, addressing any EGR system problems, checking and replacing sensors, performing a forced regeneration, or seeking professional assistance.
5. Can driving habits affect the occurrence of OBDII code P1471 related to Diesel Particulate Filter Regeneration Insufficient?
- Yes, driving habits such as frequent short trips without allowing the DPF to regenerate fully can contribute to the insufficient regeneration issue. It is advisable to drive at highway speeds periodically to help with regeneration.
6. What are the dangers of ignoring OBDII code P1471 for Diesel Particulate Filter Regeneration Insufficient?
- Ignoring this code can lead to decreased fuel efficiency, potential damage to the engine or emissions system, and may even result in the vehicle going into a reduced power or limp mode.
7. How often should Diesel Particulate Filter Regeneration be performed to prevent OBDII code P1471 from occurring?
- It is recommended to follow the manufacturer's guidelines for DPF regeneration, which may vary based on driving conditions. Regularly scheduled maintenance can help prevent issues like code P1471.
8. Are there any aftermarket products or additives that can help prevent or resolve OBDII code P1471 for Diesel Particulate Filter Regeneration Insufficient?
- Some aftermarket products or additives claim to aid in DPF regeneration, but it's essential to research and use them cautiously as improper products can potentially cause more harm than good.
9. Can extreme weather conditions impact the occurrence of OBDII code P1471 related to Diesel Particulate Filter Regeneration Insufficient?
- Yes, extreme cold or hot weather can affect the DPF regeneration process. In colder climates, the DPF may struggle to reach the necessary temperatures for regeneration, while in hot climates, excessive heat can also impact the system.
10. Is it possible to prevent OBDII code P1471 for Diesel Particulate Filter Regeneration Insufficient by performing regular maintenance?
- Yes, regular maintenance, including timely oil changes, using quality fuel, and following proper driving habits, can help prevent issues with the DPF system and reduce the likelihood of code P1471 occurring.
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