2019 Fiat Talento P253F-29 Engine Oil Deteriorated - Signal Invalid. DPF Blockage

Join us as we tackle a challenging repair on a 2019 Fiat Talento 1.6L Diesel. In this detailed video, we delve into the diagnostics and repair process of a blocked DPF (Diesel Particulate Filter) and engine management light issue, highlighting the complexities and technical steps involved in resolving common diesel vehicle problems.
Our journey begins when this Fiat Talento was referred to us after visiting several other garages. The engine management light was on, indicating a blocked DPF, and initial diagnostics with a computer revealed a critical fault code: P253F-29, signaling "Engine Oil Deteriorated - Signal Invalid."
We then examine live data, which shows an exceedingly high exhaust pressure limit and degraded oil quality, suggesting improper previous attempts to resolve the issue or overdue servicing. This comprehensive video covers our step-by-step approach to rectify these issues, including:
1. We walk you through our process of connecting to the vehicle’s computer system to read fault codes and analyze live data, highlighting how we pinpoint the problems.
2. Watch as we change the engine oil and oil filter, reset the service light, and tackle the blocked DPF. We demonstrate how to inject a chemical cleaner into the DPF via the fuel tank and then conduct a 20-mile motorway drive to ensure the cleaning process is effective.
3. *Final Checks and Tips:*
After the repairs, we conduct a thorough check to ensure no faults remain. We discuss how to prevent similar issues in the future, emphasizing the importance of regular maintenance and addressing engine management warnings promptly.
4. *Conclusion:*
We wrap up with a final summary of the vehicle’s condition and share insights on the importance of addressing oil dilution and DPF blockages to avoid long-term damage.
This video is packed with practical tips and professional advice for mechanics and Fiat Talento owners alike. Whether you're a professional mechanic or a car enthusiast, you'll find valuable insights into diesel engine maintenance and troubleshooting. Don't miss our complete guide to getting this Fiat Talento back on the road smoothly and efficiently.