i have an audi a6 quattro 2007 121k miles, automatic, ObdII codes are: P2101 electronic throttle control motor performance- bank 1 / throttle acuator control (tac) motor range/performance secondary DTCs P2106 sae throttle actuator control system forced limited power p0431 warm up catalyst bank 2 efficenty below threshold P0507 idle control system rpm higher than expected p2539 p0121 throttle position sensor (g69) implausible signal p0431 warm up catalyst bank 2 efficiency below threshold 00003-000 Control module 01793-001 vacuum pump -v22, activation ground (gnd) upper limit exceeded. with intermitting problems sometimes it starts up fine idles nice then 10 mins in it randomly stalls out. if car was hot when starting it will stall out and doesn't start unless i give it gas. if car is hot and it does turn on correctly after around 10 minutes at idle it bogs down n stalls out. i have brought it to 2 mechanics one of them 4 times same intermitting problem. all they did was change out part after part.

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Intermitting starting/running problem w check engine light

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02/10/2021 12:29 pm

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i have an audi a6 quattro 2007 121k miles, automatic, ObdII codes are:

P2101 electronic throttle control motor performance- bank 1 / throttle acuator control (tac) motor range/performance secondary DTCs
P2106 sae throttle actuator control system forced limited power
p0431 warm up catalyst bank 2 efficenty below threshold
P0507 idle control system rpm higher than expected
p2539
p0121 throttle position sensor (g69) implausible signal
p0431 warm up catalyst bank 2 efficiency below threshold
00003-000 Control module
01793-001 vacuum pump -v22, activation ground (gnd) upper limit exceeded.

with intermitting problems sometimes it starts up fine idles nice then 10 mins in it randomly stalls out. if car was hot when starting it will stall out and doesn't start unless i give it gas. if car is hot and it does turn on correctly after around 10 minutes at idle it bogs down n stalls out. i have brought it to 2 mechanics one of them 4 times same intermitting problem. all they did was change out part after part.