P2002 on Volkswagen: Causes, Symptoms and Fix Cost
Quick Answer
Not safe to drive
P2002 on a Volkswagen means the engine computer has decided the diesel particulate filter is no longer trapping soot as well as it should. Depending on the engine, it judges this from a soot sensor after the filter or from a pressure difference across the filter that is lower than expected for the exhaust flow, so the usual causes are a cracked or melted filter, a filter that has been removed or emptied, or a pressure sensor or hose fault that makes the filter look that way. A filter clogged with soot normally sets different codes, such as P2463 or P244B, although some manufacturers, VW group among them, use this code more broadly. P2002 is the code for bank 1, which on most diesels is the only particulate filter; P2003 is the bank 2 twin on engines with two filters.
- Severity
- High · Emissions
- Typical repair cost, all makes
- €40-€3600
Connect a standard OBD2 adapter (Bluetooth LE on iPhone) to your Volkswagen and Skanyx tells you what P2002 means on that engine, whether it is safe to keep driving, and what the fix should cost. Free on iPhone and Android.
Get Skanyx freeWhat does P2002 mean on a Volkswagen?
The Quick Answer above is the generic definition. What follows is the model-specific detail for the Volkswagen models that log P2002.
Volkswagen Golf TDI
2005-2024
VW group diesels use P2002 more broadly than some other makes: VW group fault-code documentation for this code lists a faulty exhaust pressure sensor (G450) or a faulty particulate filter as causes, with an emergency regeneration among the fixes, so on a Golf TDI the code can point to a loaded filter as well as a damaged one. On the 2.0 TDI CBEA and CJAA engines, the G450 sensor sits in a foil pouch just behind the oil filler cap. Check the sensor and its hoses before anyone quotes for a filter.
Source: wiki.ross-tech.com
Sources
- wiki.ross-tech.com wiki.ross-tech.com/wiki/index.php/18434/P2002/008194
What causes P2002 on a Volkswagen?
Beyond the generic causes listed on the main P2002 page, these are the patterns noted for Volkswagen models:
Faulty exhaust pressure sensor (G450) or a leaking sensor hose
: Volkswagen Golf TDI
Filter loaded with soot that regeneration has not cleared
: Volkswagen Golf TDI
Cracked or damaged filter
: Volkswagen Golf TDI
How to diagnose P2002 on a Volkswagen with OBD2
- Read all stored codes and the freeze frame with an OBD2 reader. Note whether P244A (pressure too low), P226D (filter missing), P244B or P2463 (pressure too high, soot build-up) sit alongside P2002, because they say whether the filter looks empty or full. A generic OBD2 reader can show these codes, the freeze frame and standard live data, but on most cars not the pressure across the filter, the soot load or the regeneration history, and it cannot run a forced regeneration or an adaptation: those need manufacturer-level software or a workshop.
- Inspect the pressure sensor hoses and pipes for splits, melted sections, blockage or a loose end, and check that the upstream and downstream hoses are on the right ports. A hose that no longer sees the pressure ahead of the filter makes the filter look cracked or empty while it is fine.
- Check the exhaust for leaks between the engine and the filter, which also lower the pressure the sensor sees.
- With manufacturer-level software, read the pressure across the filter at several engine speeds and loads and compare it with the specification for that engine. With the hoses and sensor proven good, a reading well below specification points to a cracked, melted or missing filter; one well above it points to a loaded filter instead.
- Look for soot where there should be none: a filter that works leaves the tailpipe and the pipe after it largely clean. A workshop can hold a clean cloth over the tailpipe while the engine is revved to see whether soot is getting through; this test is not meaningful straight after a regeneration, when an empty filter traps less.
- On makes that use P2002 for a loaded filter, such as VW group diesels, a forced regeneration with manufacturer-level software is a legitimate next step once the sensor and hoses are proven good. If it does not bring the pressure back into range, the filter needs cleaning off the car or replacing.
- A cracked or melted filter has to be replaced; cleaning removes soot and ash but cannot repair the substrate. Before fitting a new one, find what overheated or overloaded the old one (leaking injectors, a faulty exhaust fuel injector, repeatedly interrupted regenerations) and confirm the engine oil meets the low-ash specification, then have any adaptation the engine computer requires done with manufacturer-level software.
How much does P2002 cost to fix on a Volkswagen? (EUR)
Estimated repair costs for P2002 in EUR, compiled across makes. Volkswagen costs typically sit in the middle of each range.
| Repair | Parts Cost | Labor Cost | Total Estimate | DIY Difficulty |
|---|---|---|---|---|
| DPF differential pressure sensor replacement | €30–€120 | €40–€120 | €70–€240 | Moderate |
| Clean, refit or replace blocked or split pressure sensing hoses | €0–€20 | €40–€120 | €40–€140 | Moderate |
| Repair exhaust leak before the DPF | €30–€150 | €60–€200 | €90–€350 | Professional |
| Forced DPF regeneration, where the code reflects a loaded filter (diagnostic tool) | €0–€0 | €60–€150 | €60–€150 | Professional |
| DPF professional cleaning, where the code reflects a loaded filter (chemical or thermal) | €30–€80 | €150–€400 | €180–€480 | Professional |
| DPF replacement (aftermarket, type-approved) | €550–€1100 | €150–€400 | €700–€1500 | Professional |
| DPF replacement (new OEM) | €800–€3000 | €200–€600 | €1000–€3600 | Professional |
Prices estimated as of October 2026. Costs vary by region, vehicle, and shop.
Codes related to P2002
These codes are often seen alongside P2002 or point to related issues, on any make:
Looking for the full P2002 reference (all makes, full diagnosis flow, complete repair cost matrix)? See the main P2002 guide