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P0472 on Volkswagen: Causes, Symptoms and Fix Cost

Quick Answer

Safe to drive (short-term)

P0472 on a Volkswagen means the voltage from exhaust pressure sensor "A" has dropped below the lowest value its circuit should produce. That is an electrical fault: usually a signal wire shorted to ground, a missing 5 V reference supply or a failed sensor, not a problem with the exhaust itself. What sensor "A" measures depends on the engine: on many diesels it is an exhaust back pressure sensor before the turbo or the particulate filter, and on many Volkswagen group TDIs it is the DPF differential pressure sensor, the part that tells the engine how full of soot the filter is. VW, Audi, Skoda and SEAT apps often show this code as P047200; the last two digits are a failure-type byte.

Severity
Moderate · Emissions
Typical repair cost, all makes
€30-€470

Connect a standard OBD2 adapter (Bluetooth LE on iPhone) to your Volkswagen and Skanyx tells you what P0472 means on that engine, whether it is safe to keep driving, and what the fix should cost. Free on iPhone and Android.

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What does P0472 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 P0472.

Volkswagen Golf TDI

2009-2014

On Volkswagen group common-rail TDIs this code points at exhaust pressure sensor 1 (G450), which is the DPF differential pressure sensor: a small box with one electrical connector and two hoses. On the 2.0 TDI engines coded CBEA and CJAA, sold mainly in North America, it sits in a foil pouch just behind the oil filler cap, not where some factory documentation shows it.

What causes P0472 on a Volkswagen?

Beyond the generic causes listed on the main P0472 page, these are the patterns noted for Volkswagen models:

  • Failed G450 sensor

    : Volkswagen Golf TDI

  • Signal wire between G450 and the engine computer shorted to ground

    : Volkswagen Golf TDI

How to diagnose P0472 on a Volkswagen with OBD2

Follow these steps to pinpoint the root cause of P0472:

  1. Read all stored codes and the freeze frame. If other sensors on the same 5 V supply report low-input codes at the same time, look for one shorted sensor or wire pulling the shared reference down. Note any DPF codes (P2452 to P2455, P244A, P244B or P2463) stored alongside. A generic OBD2 reader shows this code, its freeze frame and standard live data. A few diesels also report exhaust or DPF pressure on a standard PID, but on most cars the pressure reading, the soot load and the regeneration history need manufacturer-level software, and only that software or a workshop can run a forced regeneration or adapt a new sensor.
  2. Find out which sensor is exhaust pressure sensor "A" on your engine: a back pressure sensor near the exhaust manifold or turbo, a sensor before the particulate filter, or on many Volkswagen group TDIs the DPF differential pressure sensor. Check the workshop information for your engine code before buying a part.
  3. Unplug the sensor and inspect the connector for corrosion, water and pushed-back pins.
  4. With the key on and the engine off, measure the 5 V reference and the ground at the connector. A missing reference points to the wiring, another sensor on the same supply or the engine computer, not the sensor.
  5. Check the signal wire for a short to ground, especially where the harness passes the turbo, exhaust pipes or DPF, and look for melted or chafed insulation.
  6. If the circuit tests good, replace the sensor with the correct part for the engine code, run the sensor adaptation if the engine computer asks for one, clear the code and road-test. If soot built up while the sensor was out, a forced regeneration may be needed afterwards.

How much does P0472 cost to fix on a Volkswagen? (EUR)

Estimated repair costs for P0472 in EUR, compiled across makes. Volkswagen costs typically sit in the middle of each range.

Repair Parts Cost Labor Cost Total Estimate DIY Difficulty
Replace exhaust pressure sensor €40–€150 €30–€80 €70–€230 Easy
Clean and repair sensor connector €10–€60 €60–€180 €70–€240 Moderate
Repair sensor wiring harness section €20–€120 €120–€350 €140–€470 Professional
Adapt or relearn a new sensor with diagnostic software (where required) €0–€0 €30–€80 €30–€80 Professional
Forced DPF regeneration if soot built up meanwhile €0–€0 €60–€150 €60–€150 Professional

Prices estimated as of March 2026. Costs vary by region, vehicle, and shop.

These codes are often seen alongside P0472 or point to related issues, on any make:

Looking for the full P0472 reference (all makes, full diagnosis flow, complete repair cost matrix)? See the main P0472 guide

Diagnose P0472 on your Volkswagen

Your car logged P0472. Skanyx reads it on a standard OBD2 adapter (Bluetooth LE on iPhone), tells you whether it is safe to keep driving, and shows the €30-€470 repair range so you know the number before a shop quotes you. Free on iPhone and Android, and you do not need to be a mechanic to read it.

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