Skoda Superb DPF exhaust temp 999
Posted: Thu Sep 24, 2020 1:42 am
Hi. Just started using the app today to get some more detail on my DPF issues. I've a Superb 1.6 TDI Greenline at around 140,000 miles. DPF warning light, couple more miles and glow plug light and performance limited.
Differential Pressure is being recorded and in line with engine load. Assumption: DPF Sensor working
Input gas Temp reading well but DPF Output gas temp Is stuck at 999. Seems like a sensor malfunction. Assumption: If it can't read the output temp is can't engage the regen or control the temp.
High pressure EGR closing. Not sure what to make of this, it's constant 100%. Does that mean it's completely open or recirculating at max?
So based on this I'm considering replacing the sensor myself as it's very accessible. Or might I be reading the data wrong? I've disconnected the exhaust temp sensor and checked the obd and I indeed get P246F (Exhaust Gas temp Sensor circuit range/performance) error. Plug it back in and no P246F error jus the existing P2463 (Particulate Filter B1). Perhaps when it goes and reports 999 temp it's still considered within range?
Differential Pressure is being recorded and in line with engine load. Assumption: DPF Sensor working
Input gas Temp reading well but DPF Output gas temp Is stuck at 999. Seems like a sensor malfunction. Assumption: If it can't read the output temp is can't engage the regen or control the temp.
High pressure EGR closing. Not sure what to make of this, it's constant 100%. Does that mean it's completely open or recirculating at max?
So based on this I'm considering replacing the sensor myself as it's very accessible. Or might I be reading the data wrong? I've disconnected the exhaust temp sensor and checked the obd and I indeed get P246F (Exhaust Gas temp Sensor circuit range/performance) error. Plug it back in and no P246F error jus the existing P2463 (Particulate Filter B1). Perhaps when it goes and reports 999 temp it's still considered within range?