Exhaust Gas Temperature Sensor - 01348

[Deep Blue]

Okay,

Fairly cold morning - about two minutes down the road the ornage glowplug warning light started flashing. Got home later and hooked-up the Foxwell scanner and got:

01348 Exhaust Gas Temperature Sensor Circuit - Bank 1

I cleared the fault and it hasn't reappeared as yet (two days later). It's a 2009 Passat CC 2.0L TDI. Are there four of these sensors? Are they against the engine firewall on the passenger side of the vehicle? Any thoughts on what to do if it comes back?

[Lucas_R]

If it comes back then you likely have a faulty temp sensor in the exhaust. If the sensor is not working correctly then it will impact the DPF and it will not perform a regen at the regular intervals that it usually does and will start to block up.

If the error comes back, book it into your VW specialist mechanic to have it seen to - replacing the sensor will be no more than a few hundred dollars, but if it damages your DPF then that price will quickly escalate.

Here is a link to an EGT sensor to suit the Passat CC so you have an idea of the cost: PAT EGT Sensor EGT-013 | Sparesbox

[Deep Blue]

Thanks for that - will wait to see if it returns. Got a bit of time at home so might try and fix it myself if it returns. I have a multimeter - is it difficult to determine the faulty sensor (or wiring)? If I work out which one is it fairly easy to replace?

[Lucas_R]

Thanks for that - will wait to see if it returns. Got a bit of time at home so might try and fix it myself if it returns. I have a multimeter - is it difficult to determine the faulty sensor (or wiring)? If I work out which one is it fairly easy to replace?

A bad sensor will read low (<60 ohms) depending on what is wrong with it. A new good sensor should be 150-200 ohms. Heat the sensor tip with a heat gun/hair dryer/cigarette lighter and see if the ohms change as it heats up.

The sensor should be located in the exhaust manifold before the turbo. See link below which has some pics which should be useful.

TDIClub Forums - View Single Post - p0544 Sensor 1 for exhaust temp bank 1 (G235)

[igorili]

A bad sensor will read low (<60 ohms) depending on what is wrong with it. A new good sensor should be 150-200 ohms. Heat the sensor tip with a heat gun/hair dryer/cigarette lighter and see if the ohms change as it heats up.

The sensor should be located in the exhaust manifold before the turbo. See link below which has some pics which should be useful.

TDIClub Forums - View Single Post - p0544 Sensor 1 for exhaust temp bank 1 (G235)

Hi , I own VW CC 2.0 Tdi ( 2014y) with 110.500 km till now . While driving I get the yellow error message same as is describe on the clip that Lucas_R post it. I went to my offical vw dealer and they told me that I have to change G235 ( black wire) immediately in order not to damge DPF filter. But from that moment till now ( 3 days) the yellow signs are not showing and eveything is working normaly. My question is it safe to wait till I get next error message than change it or I have to do it immiditely as they told me ?

Greetings,
Igor

[Lucas_R]

This video (although its in Italian) gives you some good visuals of the issue if the sensor needs replacing.

[Deep Blue]

Thanks for the link - will have a look!

[Deep Blue]

Thanks Lucas_R - much appreciated! Might have a go if it does return. Plenty of time on my hands now!

[Lucas_R]

Igor - it sounds like the VW dealership have probably deleted the error when they assessed your car which has taken the light off your dash. You might be lucky that it was a one-off type situation, but its likely that the error will come back over the next few days/weeks and you are going to have to replace the sensor.

Thankfully its relatively inexpensive and easy to change so you could do it yourself if you are handy, otherwise a small fee at your mechanic to fit it.

If you ignore it, you will likely end up with DPF (Diesel Particulate Filter) issues which is a MUCH more expensive problem to fix.

[igorili]

Lucas thank you for the precise response. Just as you wrote above, the error occurred and I have already replaced the sensor, now I have no problem.Thank you very much once again. All the best.
Igor