Volvo xc60 P029900 Turbo/Super Charger anad P245500 Diesel Particulate Filter Differential Pressure

1. P029900 Turbo/Super Charger Underboost General Failure Information. No Sub Type Information

2. P245500 Diesel Particulate Filter Differential Pressure Sensor Circuit High. General Failure Information. No Sub Type Information


—————————————————————————————————

The diagnostic trouble code (DTC) P2455 refers to a Diesel Particulate Filter (DPF) Differential Pressure Sensor Circuit High. This means the powertrain control module (PCM) has detected a high voltage or resistance in the circuit related to the DPF differential pressure sensor.

Possible Causes:
1. Faulty DPF Differential Pressure Sensor – The sensor itself could be malfunctioning.
2. Clogged or Leaking DPF Pressure Sensor Hoses – If the hoses are clogged, damaged, or disconnected, the sensor may give incorrect readings.
3. Wiring Issues – Short to voltage, open circuits, or corroded connections in the wiring harness.
4. Excessive Soot or Ash Buildup in the DPF – A highly clogged DPF can create pressure variations beyond normal ranges.
5. Faulty PCM (Rare) – If all else checks out, the PCM could be at fault.

Symptoms:
• Check Engine Light (CEL) ON
• Reduced Power / Limp Mode
• Increased Fuel Consumption
• Excessive Exhaust Smoke

Possible Fixes:
1. Inspect & Clean the Sensor and Hoses – Remove and check for soot buildup or blockages.
2. Check Wiring & Connectors – Look for damaged wires, loose connections, or corrosion.
3. Test the Sensor – Use a multimeter to check voltage and resistance; replace if out of spec.
4. Regenerate or Clean the DPF – If the filter is clogged, perform a forced regeneration or replace if necessary.
5. Reset the Code & Test Drive – After repairs, clear the code and check if it returns.

If the issue persists after checking these points, deeper diagnostics may be required. Do you have any specific symptoms or recent repairs that might be related?


——————————————————————————————————
A multibrand car workshop, AUTO HUB
Mo.7652057042