Inside the exhaust tunnel, the harness to the reductant injector is exposed to heat and vibration. Chafing against the heat shield causes intermittent shorts. Volvo has released a technical bulletin (TJ 35754) for this exact issue.
Do not replace just the belt. Always replace the following as a set: p2df000 volvo new
You’ll need a professional-grade scanner that reads Volvo-specific codes (VIDA, Autel Ultra, Snap-on Zeus, or Volvo’s own VIDA 2024). Generic OBD2 scanners will not show manufacturer-specific codes like P2DF000. Inside the exhaust tunnel, the harness to the