Exhaust gas temperature sensor 4
Posted: Fri Oct 17, 2025 3:24 pm
Hi everyone,
Last week I had "Engine Fault - Workshop" come up on my MFD, got home and scanned it with my scanner (only a Carly, not super in depth) and got error code P246E00 Exhaust Gas Temperature Circuit Bank 1 Sensor 4".
I drove with it until Tuesday where I did a long run up from Gloucester to Birmingham, with the fault coming up as I was driving up there but made it no problem or reduced performance. When I got in the car to drive back to Gloucester I had a DPF light come on, then after setting off the original fault also came on. I assumed that the original issue was stopping it from doing a regen which is what caused the DPF light to come on.
On Wednesday I replaced the exhaust sleeve, as I had an advisory on my MOT for it and was thinking if it was leaking that could be causing my original issue if it was throwing the temp off - alas the issue came back on my drive home from my workshop unit after doing the sleeve.
While driving I had the live data displaying the temp of sensors 1, 3 and 4, as well as the catalyst temp. They were all increasing gradually as I drove, until sensor 4 hit 260c and that's when the fault code came on, all of the other temperatures then slowly came down (I assume the car was reducing performance slightly to try to reduce temps?) however sensor 4 continued to rise until it reached 336c which is where it stayed.
I did manage to drive home from work and back to work again earlier at lunch without the error presenting itself, and the DPF light has also gone off so I assume it managed to do a regen. However after work I went on a longer drive and the fault came back so I assume my next step is to replace the sensor itself?
I thought I'd sign up for this page and post on here as I can see other people have had a similar issue, albeit a while ago so I wanted to see if there was any new advice! Or if anyone an tell me exactly where this sensor is, the part number, or any tips that would be appreciated?
Euro Car Parts don't seem to have the EGT sensors, AutoDoc have loads of different sensors in the EGT sensor category. For reference it's a 1.6.
I also have P068400 "Glow plug control module to PCM Comm. Circuit range / performance" however I've had this showing since I bought the car and as it started without issue over winter I didn't bother fixing it but if anyone knows what I need to change to this too I'd appreciate that as well!
Thank you for reading.
Last week I had "Engine Fault - Workshop" come up on my MFD, got home and scanned it with my scanner (only a Carly, not super in depth) and got error code P246E00 Exhaust Gas Temperature Circuit Bank 1 Sensor 4".
I drove with it until Tuesday where I did a long run up from Gloucester to Birmingham, with the fault coming up as I was driving up there but made it no problem or reduced performance. When I got in the car to drive back to Gloucester I had a DPF light come on, then after setting off the original fault also came on. I assumed that the original issue was stopping it from doing a regen which is what caused the DPF light to come on.
On Wednesday I replaced the exhaust sleeve, as I had an advisory on my MOT for it and was thinking if it was leaking that could be causing my original issue if it was throwing the temp off - alas the issue came back on my drive home from my workshop unit after doing the sleeve.
While driving I had the live data displaying the temp of sensors 1, 3 and 4, as well as the catalyst temp. They were all increasing gradually as I drove, until sensor 4 hit 260c and that's when the fault code came on, all of the other temperatures then slowly came down (I assume the car was reducing performance slightly to try to reduce temps?) however sensor 4 continued to rise until it reached 336c which is where it stayed.
I did manage to drive home from work and back to work again earlier at lunch without the error presenting itself, and the DPF light has also gone off so I assume it managed to do a regen. However after work I went on a longer drive and the fault came back so I assume my next step is to replace the sensor itself?
I thought I'd sign up for this page and post on here as I can see other people have had a similar issue, albeit a while ago so I wanted to see if there was any new advice! Or if anyone an tell me exactly where this sensor is, the part number, or any tips that would be appreciated?
Euro Car Parts don't seem to have the EGT sensors, AutoDoc have loads of different sensors in the EGT sensor category. For reference it's a 1.6.
I also have P068400 "Glow plug control module to PCM Comm. Circuit range / performance" however I've had this showing since I bought the car and as it started without issue over winter I didn't bother fixing it but if anyone knows what I need to change to this too I'd appreciate that as well!
Thank you for reading.