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EGT sensor (G235) - only one on our 5 cylinder?

- - - - - fault finding

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Hi all,


I have had a CEL / MIL on the dash for a few months & can't clear it. Car runs perfectly fine & doesn't use more fuel than expected.


Most discussion around the G235 fault is about Tdi engines, & often engines with 2 banks (V6/V8) & thus having >1 EGT sensor. One forum post in particular had the same 001348 & P0544 codes as me, but had 4 temperatures shown in VCDS & that apparently helped the bloke ID the fault.


Freeze Frame:
RPM: 3197 /min
Speed: 85.0 km/h
Voltage: 14.21 V
Temperature: 84.6°C
Temperature: 930.0°C
Temperature: 288.0°C
Temperature: 252.0°C


My scan shows 2 temperatures, both 26 deg C, which would be the ambient temp in the garage on the day the ignition was turned on & the sensor "failed".


I also have a P3 Cars OBD2 gauge which makes it simple to read the EGT live. Driving around the temp changes in response to throttle/load input (mostly between 500 & 650 deg C) & in my opinion looks normal.


Question - is my OBD2 gauge reading a working EGT sensor & there is a secondary one that has failed? If so, can anyone point me to where it might be because I can only find one (with the electonics box attached to the PS firewall).





My TTRS scan

001348 - Sensor 1 for Exhaust Temp Bank 1 (G235)
               P0544 - 001 - Circuit Malfunction - MIL ON
             Freeze Frame:
                    Fault Status: 11100001
                    Fault Priority: 2
                    Fault Frequency: 1
                    Mileage: 98336 km
                    Time Indication: 0
                    Date: 2023.12.04
                    Time: 11:53:44
             Freeze Frame:
                    RPM: 0 /min
                    Load: 0.0 %
                    Speed: 0.0 km/h
                    Temperature: 26.0°C
                    Temperature: 26.0°C
                    Absolute Pres.: 1000.0 mbar
                    Voltage: 12.319 V

Edited by AusTTRS, 09 March 2024 - 06:32 AM.

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