1.8T AUQ EPC light on, limp mode - Engine, Tuning and Performance - uk-mkivs

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1.8T AUQ EPC light on, limp mode


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#1 nrs120

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Posted 26 November 2020 - 12:11 AM

Hello everyone, i was driving to work and EPC light came on , lost power and was idling very weird, so i scanned car codes below) so i replaced battery, throttle body and MAf sensor and it was fine for couple of weeks but than it happened again so than i changed throttle body again and did adaptation was fine for 3 week and today happened again, does anyone had same problem and know what could be problem because i don't know what else to do? thanks

 
P1602 Power Supply B+ Terminal 30: Voltage too Low

P1542 Angle Sensor 1 for Throttle Actuator (G187): Implausible Signal

P1568

P1579 Throttle Actuator (J338): Adaptation Not Started

P1171

P0507 Idle Control System RPM: Higher than Expected.

 
 



#2 adam-

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Posted 26 November 2020 - 09:25 AM

Have you carried out a throttle body adaptation?  How does your O2 wiring look?  Shorted out?


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#3 nrs120

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Posted 03 December 2020 - 08:12 PM

Have you carried out a throttle body adaptation?  How does your O2 wiring look?  Shorted out?

yh i did adaptation, 02 wiring look good, it was alright for a week but the light came back on today with  Angle Sensor 2 for Throttle Actuator (G188): Implausible Signal



#4 adam-

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Posted 03 December 2020 - 08:19 PM

Throttle body is bad or the wiring is bad.  Most likely throttle body.


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