P0471, B2000 & P2002 error code

steve brown · Nov 24, 2014

Hi folks,

anyone shed some light on these faults please? i've replaced the map sensor at the bottom of the car for the p0471 error but i'm still having issues. HELP

desertstorm · Nov 24, 2014

From the Ross Tech Wiki http://wiki.ross-tech.com/wiki/index.php/16855/P0471/001137

16855/P0471/001137
Contents

1 16855/P0471/001137 - Exhaust Pressure Sensor 1 (G450): Implausible Signal

16855/P0471/001137 - Exhaust Pressure Sensor 1 (G450): Implausible Signal
Possible Symptoms

Malfunction Indicator Light (MIL) ON

Possible Causes

Wiring and/or Connector(s) from/to Exhaust Pressure Sensor 1 (G450) faulty
Hose from/to Exhaust Pressure Sensor 1 (G450) faulty
Exhaust Pressure Sensor 1 (G450) faulty/incompatible

Possible Solutions

Check Wiring and/or Connector(s) from/to Exhaust Pressure Sensor 1 (G450)
Check Hose from/to Exhaust Pressure Sensor 1 (G450)
Check/Replace Exhaust Pressure Sensor 1 (G450)
- Check Exhaust Pressure Sensor 1 (G450) Compatibility

Special Notes

This Fault Code often indicates an incorrect/incompatible Exhaust Pressure Sensor 1 (G450) being installed. VAG uses two different types of sensors:
- through MY 2009 = 076-906-051-A (formerly 03G-906-051-A)
- from MY 2010 = 076-906-051-B

If in doubt check the Part Number of the Exhaust Pressure Sensor 1 (G450) and compare it against the Parts Catalog.

With CBEA and CJAA engines, the factory documentation may show the wrong part location for the Exhaust Pressure Sensor 1 (G450). This sensor is in a foil pouch just behind the oil cap.

18434/P2002/008194
Contents

1 18434/P2002/008194 - Particle Filter Bank 1: Malfunction

18434/P2002/008194 - Particle Filter Bank 1: Malfunction
Possible Symptoms

Malfunction Indication Lamp (MIL) active

Possible Causes

Exhaust Pressure Sensor (G450) faulty
Diesel Particle Filter (DPF) faulty

Possible Solutions

Check/Replace Exhaust Pressure Sensor (G450)
Diesel Particle Filter (DPF)
- Perform Emergency Regeneration (Refer to Specifications!)
- Check/Replace Diesel Particle Filter (DPF)

Special Notes

Skoda Superb (3U) & VW Passat (3B) (Engine Codes: BGW, BSS, BWW) had issues with faulty Exhaust Pressure Sensors (G450), they were defective from factory and due to a leaking sealing the measured values were incorrect and resultet in wrong calculated particle filter load and unsuccessful regeneration cycles.
With CBEA and CJAA engines, the factory documentation may show the wrong part location for the Exhaust Pressure Sensor 1 (G450). This sensor is in a foil pouch just behind the oil cap.

Don't know what a B2000 code is. Looks like you are having issues with a DPF may be blocked has it regenerated recently ?

Karl

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P0471, B2000 & P2002 error code

steve brown

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desertstorm

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