The Diesel Particulate Filter (DPF) is blocked and failing regeneration. Malfunction Indicator Lamp (MIL) warning light is shown on the instrument panel cluster and the car is experiencing restricted performance.
Possible fault codes:
P244C [Exhaust Temperature Too Low for Particulate Filter Regeneration] and/or,
P26A1 [Exhaust Aftertreatment Glow Plug Circuit/Open]
The vaporiser is physically blocked, or a blown fuse due to a vaporiser component internal short circuit caused by the vaporiser glowplug overheating, or pump failure.
- Gain access to the vaporiser, connect a vacuum pump (Mityvac) and see if the vaporiser holds a vacuum. If so, then the vaporiser is blocked and will need replacing.
- If the fuse for the vaporiser glowplug or pump has blown, then test the glowplug resistance (Nominal 1.1 Ohms, if less than 0.8 Ohms or greater than 1.3 Ohms then the vaporizer glow plug is faulty and will need to be replaced).
- If the value is within spec, then disconnect the fuel line from the pump and place the end of the fuel line in a clean container and run the bleed/prime routine. If the pump is noisy, or does not run, then check the wiring to pump and that the fuel lines are not blocked. Replace pump and bleed as necessary.