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

/dev/null · Mar 12, 2011

Started the car earlier on and the engine management warning light was on. Made a 10 mile round trip and then did a scan when I got home. The error showing was this:

Code:

Address 01: Engine        Labels: Redir Fail!
   Part No SW: 03G 906 018 DT    HW: 03G 906 018 DT
   Component: R4 2.0l PPD1.2 G    4352  
   Revision: --H22---    Serial number: SEZ7Z0F3516175
   Coding: 0050072
   Shop #: WSC 02102 476 94331

1 Fault Found 
001137 - Exhaust Pressure Sensor 1 (G450): Implausible Signal 
               P0471 - 006 - Short to Plus - Intermittent - MIL ON
             Freeze Frame:
                    Fault Status: 10100001
                    Fault Priority: 1
                    Fault Frequency: 61
                    Reset counter: 40
                    Mileage: 147369 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 13:19:52

             Freeze Frame:
                    RPM: 0 /min
                    Torque: 144.0 Nm
                    Speed: 0.0 km/h
                    Pressure: 0.0 mbar
                    Text:      -84  
                    Text:   mbar    
                    Text:     

Readiness: N/A

Now I reset this after doing the scan and it's stayed off since (have driven around 10 miles). The only thing I can think that may have caused it is I was running low on fuel this afternoon (forgot to fill up last night) so I stuck a fiver in at Tesco to put me on until I could get to a shell garage. But surely supermarket fuel isn't this bad for your car lol!?

Anyway, it the above something serious? If it doesn't happen again, should I bother having it looked at?
Also, assuming it's a sensor that's faulty, what kind of price am I looking at for it to be fixed (dealer rates?)

Ta!

[edit]
btw, no other warning lights were showing (DPF, coil etc) and the car drove fine.

WeeG · Mar 12, 2011

My lamda and egt sensors were £100+ mate, when they went. The egt you could not reset without it coming up straight away again, but the lamda stayed off for a few hundred miles and then the EML light came on. I would say if the fault comes on again your looking at a replacement

mds1256 · Mar 12, 2011

The G450 sensor is the DPF pressure sensor, they are around £80 and quite easy to change yourself to be honest.

The sensor is located at the top left of the engine and it clipped to the corner of the engine.

It has 2 pipes coming off it going down to the DPF

/dev/null · Mar 12, 2011

To be honest, knowing nothing about car fixing, and having no tools to do it either, I'd probably rather have it done at the garage. Hopefully it'll stay off now and it was just the car protesting at me letting it get low on fuel!

steroidchris · Mar 12, 2011

I had my ecu light and dpf light on at the same time. Took it to my bro, to put his diagnostic kit on it and it was the exhaust pressure sensor. He cleared it and it's been ok since. I'll wait till it happens again before I do anything. Luckily for me my bro is a mechanic and will do it for me.

/dev/null · May 29, 2011

Came on again yesterday - been ok for 2 months though!

Code:

001137 - Exhaust Pressure Sensor 1 (G450): Implausible Signal 
               P0471 - 006 - Short to Plus - Intermittent - MIL ON
             Freeze Frame:
                    Fault Status: 10100001
                    Fault Priority: 1
                    Fault Frequency: 80
                    Reset counter: 40
                    Mileage: 156831 km
                    Time Indication: 0
                    Date: 2000.00.00
                    Time: 19:03:46

             Freeze Frame:
                    RPM: 0 /min
                    Torque: 144.0 Nm
                    Speed: 0.0 km/h
                    Pressure: 21.3 mbar
                    Text:      -84  
                    Text:   mbar    
                    Text:

Ben huxtable · May 29, 2011

Dpf sensors are common across the range, when you order new one the parts are generally modified. Plus sometimes software updates are available but seat would only be able to tell you about software. If your unsure just try a new sensor.

/dev/null · May 29, 2011

Ben huxtable said:
Dpf sensors are common across the range, when you order new one the parts are generally modified. Plus sometimes software updates are available but seat would only be able to tell you about software. If your unsure just try a new sensor.

Not sure what you mean about the new ones being modified!? The software is always checked for updates when it goes in for a service (every 5 months or so) and updated if needed.

Nath. · May 29, 2011

I'm sure I have read that the DPF pressure sensors have been updated to try and make them more reliable.

/dev/null · May 29, 2011

hmmm... I'll ask them to fit another one anyway when it goes in for the MOT at the end of next month...

Ben huxtable · May 29, 2011

Part numbers maybe the same but Manufacturers change from time to time!

AndrewJB · May 29, 2011

Last letter of the part number changes alot, indicates an updated part

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

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