C220 SPORT CDI BLUEEFFI-CY A (2012)
Looking for some assistance with why I have suddenly developed multiple fault codes.
Driving home the other night I noticed that the engine light had come on and the car had switched to limp home mode.
Once home I plugged in my OBDII scanner and found that I had nine codes active
Some were duplicated but the short list was a throttle pedal position sensor, camshaft position sensor, generic fault codes (no specific cause).
The car was running well, no noises, smells or vibrations, so I reset the codes and took a test drive, but the engine lamp re-illuminated.
This time there were other codes, so I continued to reset codes and restart the engine.
The lamp always re-lights, and my final list of different codes that have appeared are:
P0123 - Throttle pedal position sensor switch A circuit high
P0697 - Sensor reference voltage C circuit high
P0340 - Camshaft position sensor A circuit bank 1 or single sensor
P0409 - Exhaust gas recirculation sensor A circuit
P2015 - Intake manifold runner position sensor switch circuit range
P2463 - DTC definitions not found! Please refer to vehicle service manual
P2112 - Throttle actuator control system stuck closed
I doubt that all these seemingly unrelated sensors have all failed simultaneously, and seems more likely to be a common power supply or ground connection issue.
I've checked all fuses and found none blown.
Has anyone experienced something like this?
Or does anyone know where a likely ground point for these would be located?
I've not needed to take a car to a garage for repair in over 30 years, but this might beat me. So any help would be gratefully received.
The car is standard, no re-maps or component changes.
Cheers,
Douglas
Looking for some assistance with why I have suddenly developed multiple fault codes.
Driving home the other night I noticed that the engine light had come on and the car had switched to limp home mode.
Once home I plugged in my OBDII scanner and found that I had nine codes active

Some were duplicated but the short list was a throttle pedal position sensor, camshaft position sensor, generic fault codes (no specific cause).
The car was running well, no noises, smells or vibrations, so I reset the codes and took a test drive, but the engine lamp re-illuminated.
This time there were other codes, so I continued to reset codes and restart the engine.
The lamp always re-lights, and my final list of different codes that have appeared are:
P0123 - Throttle pedal position sensor switch A circuit high
P0697 - Sensor reference voltage C circuit high
P0340 - Camshaft position sensor A circuit bank 1 or single sensor
P0409 - Exhaust gas recirculation sensor A circuit
P2015 - Intake manifold runner position sensor switch circuit range
P2463 - DTC definitions not found! Please refer to vehicle service manual
P2112 - Throttle actuator control system stuck closed
I doubt that all these seemingly unrelated sensors have all failed simultaneously, and seems more likely to be a common power supply or ground connection issue.
I've checked all fuses and found none blown.
Has anyone experienced something like this?
Or does anyone know where a likely ground point for these would be located?
I've not needed to take a car to a garage for repair in over 30 years, but this might beat me. So any help would be gratefully received.
The car is standard, no re-maps or component changes.
Cheers,
Douglas