How to Fix P0171 Code - Symptoms, Diagnosis, and Repair Tips - 1A Auto

using: ⸻ VW Transporter T5 in limp mode with engine warning light and fault code P0101. This video explains why the fault is often misdiagnosed as a MAF issue and shows the real, common cause on 2.0 diesel engines — a faulty MAP sensor reporting incorrect intake air temperature. We go through the symptoms, the logic behind the fault code, what live data to check, and why an implausible temperature reading can trigger limp mode. No guesswork, no parts swapping — just proper diagnosis. Useful for