are a short description deal with G235 and G236 exhaust gas
temperature EGT senders problems.
OEM name of the probe could be 06A
919 529 or 078 919 529. EGT senders are designed to protect
turbochargers against thrermal shock and overheating.
Damaged EGT sensors set ECU in safe mode to prevent engine
parts further destruction. In this "safe mode"
turbocharged engine works almost like normally aspirated one.
ECU memory faults DTC's conectted with G235 or/and G236 are listed
|| Exhaust gas temperature sensor 1 open/short to B+
||Exhaust gas temperature sensor 1 short to
|| Exhaust gas temperature sensor 1 range/performance
|| Exhaust gas temperature control bank 1 limit attained
||Exhaust gas temperature sensor 2 open/short to B+
|| Exhaust gas temperature sensor 2 short to ground
||Exhaust gas temperature sensor 2 range/performance
||Exhaust gas temperature control bank 2 limit attained
After my private investigation ;-) it turned out, that the main problem
is not a thermocouple (as I supposed before) but electronic circuit.
Because electronic is my hobby I decided to save some money and mend a
sensors my self.
For now I will present only photos as a description of repairation
Disassembled OEM EGT Senders
2001 on the left; 2008 on the right
Below PCB with
electronic circuit conversing thermocouple signal into engine ECU
PCB inside original EGT Sensor housing
(click on photo to englare)
can find more