I finally got VAG-COM working on the car and 4 engine faults were found
16500 - Engine Coolant Temp. Sensor (G62): Implausible Signal
P0116 - 35-10 - - - Intermittent
17536 - Fuel Trim: Bank 1 (Mult): System too Lean
P1128 - 35-00 - -
18010 - Power Supply Terminal 30: Voltage too Low
P1602 - 35-10 - - - Intermittent
16486 - Mass Air Flow Sensor (G70): Signal too Low
P0102 - 35-10 - - - Intermittent
I'm guessing by these results that the engine coolant temp sensor is the infamous one which goes! But how can I tell if it's the one where you have to buy a whole new coolant bottle or the other one?
MAF is obviously causing the performance issues. The highest MAF reading I obtained seemed to be about 70 g/s when booting it. Would this be causing the fault of running too lean on bank 1 or is that something else?
No idea what the "terminal 30 - voltage too low" is as VAG-COM live reading were 14.0V for the battery.
How do I know how old these faults are? I had a
problem with the water temp beeping at me when i first started back in the very cold winter mornings but the water temp gauge seems to be fine since then.
Thank you.