kennymc

VAG fault codes. What do they mean?

12 posts in this topic

Guys got these codes off of my 2010 A6 2.0 tdi. Can anyone tell me what the problem is and roughly what it would be to fix it? Any help much appreciated.

 

codes below

 

Friday,27,September,2013,19:42:20:40932
VCDS -- Windows Based VAG/VAS Emulator
VCDS Version: 12.12.0.0
Data version: 20130910
 
 
VIN: WAUZZZ4F0BN005640   License Plate: 
Mileage: 61650km-38307mi   Repair Order: kenny
 
 
 
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
 
 
                Address 01: Engine       Labels: 03L-906-022-CAG.clb
Control Module Part Number: 03L 906 022 FH    HW: 03L 906 022 FG
  Component and/or Version: R4 2,0L EDC   H04 6418
           Software Coding: 0105002C02072120
            Work Shop Code: WSC 02325 785 00200
              ASAM Dataset: EV_ECM20TDI03L906022FH A01009 (AU56)
                      VCID: 70E52ED6AB3CF79E643-8025
4 Faults Found:
 
4914 - Diesel Particle Filter; Differential Pressure Sensor 
          P2453 00 [237] - Implausible Signal
          MIL ON - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 61537 km
                    Date: 2013.09.24
                    Time: 17:56:46
 
5182 - Particulate Trap Bank 1 
          P2002 00 [101] - Efficiency Below Threshold
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 61390 km
                    Date: 2013.09.20
                    Time: 09:11:05
 
5262 - Exhaust Pressure Sensor 1 (G450) 
          P0472 00 [172] - Signal too Low
          MIL ON - Intermittent - Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 178
                    Mileage: 61192 km
                    Date: 2013.09.14
                    Time: 13:13:28
 
5162 - Exhaust Pressure Sensor 1 (G450) 
          P0471 00 [101] - Implausible Signal
          Not Confirmed - Tested Since Memory Clear
             Freeze Frame:
                    Fault Status: 00000001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 61538 km
                    Date: 2013.09.24
                    Time: 19:27:20
 
 
Readiness: 1 2 0 0 0 
 
--------------------------------------------------------------------------------
--------------------------------------------------------------------------------
 
 
Address 01: DTCs cleared

 

Share this post


Link to post
Share on other sites

It's either a faulty pressure sensor on the DPF or tje DPF is clogged.

Have you tried to force a regen by driving at a constant speed for about 20mins with the revs around 2,800rpm?

If that doesn't work you need to take it to a garage for them to do a forced regen or see if the pressure sensor on the DPF is faulty.

I've heard of a few pressure sensors failing on newer VAG diesels.

Edited by Cuprabob

Share this post


Link to post
Share on other sites

It's either a faulty pressure sensor on the DPF or tje DPF is clogged.

Have you tried to force a regen by driving at a constant speed for about 20mins with the revs around 2,800rpm?

If that doesn't work you need to take it to a garage for them to do a forced regen or see if the pressure sensor on the DPF is faulty.

I've heard of a few pressure sensors failing on newer VAG diesels.

 

Thanks for the reply Cupra

 

I haven't tried the regen thing but I will do. 

 

Any idea how much for a garage to sort if its the pressure sensors? 

 

I was thinking of getting a new car anyway this may just speed things up.

Share this post


Link to post
Share on other sites

Sorry, I don't know the cost as all the ones I've heard about.were.done under.warranty.

At that mileage it probably is the sensor unless you do a lot of short journeys or town driving to clog up the DPF.

Edited by Cuprabob
1 person likes this

Share this post


Link to post
Share on other sites

Sorry, I don't know the cost as all the ones I've heard about.were.done under.warranty.

At that mileage it probably is the sensor unless you do a lot of short journeys or town driving to clog up the DPF.

 

I do about 19 miles to work a day so kinda middle of the road type journeys. 

 

The car is just out of warranty so maybe worth seeing if they will do it as a good will gesture.

Share this post


Link to post
Share on other sites

Certainly worth a try as it's a common fault, if it turns out to be that.

Just had a quick search and you would be looking at around £50 for the sensor and probably 1hr labour to diagnose and replace, so looking at £150 to fix

Edited by Cuprabob

Share this post


Link to post
Share on other sites

Certainly worth a try as it's a common fault, if it turns out to be that.

Just had a quick search and you would be looking at around £50 for the sensor and probably 1hr labour to diagnose and replace, so looking at £150 to fix

 

Cupra thanks very much for that.

 

Will give them a phone and see what they come up with.

Share this post


Link to post
Share on other sites

I have called the stealers today to ask for a rough guesstimate on cost going by the fault codes. Waiting on them getting back to me.

Share this post


Link to post
Share on other sites

Well stealers never got back with info so spoke to an independent (A 4 audi) in glasgow. The guy said almost certainly the DPF differential pressure sensor. He said about £140 for the part and the regen to clear the DPF.

Stealer wants nearer £200.

Share this post


Link to post
Share on other sites

That's not too bad then.

Although I've not used them personally, I've heard good things about VWAudi repair centre in Duntocher and Bothwell. A 4 Audi also have a great reputation.

Share this post


Link to post
Share on other sites

VAG Error Code: 18885

EOBD II Error Code: P2453

 

Fault Location:
Diesel Particulate Filter (DPF) Pressure Sensor 'A' - Implausible Signal

 

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.

Fuse(s) faulty.
Wiring/Connector(s) from/to Exhaust Pressure Sensor 1 (G450) faulty.
Tubing from/to Exhaust Pressure Sensor 1 (G450) restricted/clogged.
Exhaust Pressure Sensor 1 (G450) faulty.

Possible Solutions:
Check Fuse(s).
Check Wiring/Connector(s) from/to Exhaust Pressure Sensor 1 (G450).
Check Tubing from/to Exhaust Pressure Sensor 1 (G450).
Check/Replace Exhaust Pressure Sensor 1 (G450).
Check Part Number/Version of Exhaust Pressure Sensor 1 (G450).
Check Measuring Value Blocks (MVB).
Check Diesel Particulate Filter Ash Volume.
Check Exhaust Pressure Sensor 1 (G450) Offset Value.
Differential pressure signal < -83 hPa to > 80 hPa.

 

 

VAG Error Code: 18434

EOBD II Error Code: P2002

 

Fault Location:
Diesel Particulate Filter (DPF) Bank 1 - Malfunction

 

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.

Exhaust Pressure Sensor (G450) faulty.
Diesel Particulate Filter (DPF) faulty.

Possible Solutions:
Check/Replace Exhaust Pressure Sensor (G450).
Diesel Particulate Filter (DPF).
Perform Emergency Regeneration (Refer to Specifications!).
Check/Replace Diesel Particulate 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.

 

 

 

EOBD II Error Code: P0472

 

Fault Location:
Exhaust Gas Pressure Sensor (G450) - Low Input/Short Circuit to Earth

 

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.

Wiring/Connector(s) short to earth.
Fuse(s).
Exhaust gas pressure sensor (G450).
Engine Control Module (ECM).

Tech Notes:
Replacing the exhaust back pressure usually takes care of the problem.

When is the code detected?:
An Exhaust Back Pressure (EBP) signal that is detected out of range (high or low) by the Engine Control Module (ECM) will cause the engine to ignore the Exhaust Back Pressure (EBP) signal and disable exhaust back pressure operation.

Description:
The Exhaust Back Pressure (EBP) sensor is a variable capacitance sensor that, when supplied with a 5-volt reference signal from the Engine Control Module (ECM), produces a linear analog voltage signal that indicates pressure.

The Exhaust Back Pressure (EBP) sensor's primary function is to measure exhaust back pressure so that the Engine Control Module (ECM) can control the Exhaust Back Pressure Regulator (EPR) when needed.

 

 

VAG Error Code: 16855

EOBD II Error Code: P0471

 

Fault Location:
Exhaust Gas Pressure Sensor (G450) - Implausible Signal

 

Possible Cause:
Malfunction Indicator Lamp (MIL)(K83) active.

Wiring/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.

Possible Solutions:
Check Wiring/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).
The new Exhaust Pressure Sensor must be calibrated with VAG-COM\VCDS.

 

As taken from my EOBD II Fault Codes software.

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now