Anyone had this code?
OBD2 CODE: P0121 Throttle/pedal position sensor/switch "A" circuit range/ performance
error code
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Cuprabob
- Posts: 5036
- Joined: Sat Aug 07, 2010 2:31 pm
- I drive a: GT 2.0 TDI 170/184
- In: Rising Blue
- With a: Manual box
- Location: S/W Scotland
Re: error code
Check the connections at the throttle pedal assembly and the throttle body. Do you have an EPC light warning light on?
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Cuprabob
- Posts: 5036
- Joined: Sat Aug 07, 2010 2:31 pm
- I drive a: GT 2.0 TDI 170/184
- In: Rising Blue
- With a: Manual box
- Location: S/W Scotland
Re: error code
Another thought has sprung to mind. As you've just replaced the batter, you maybe haven't given the throttle body a chance to synchronise.
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blz-8027
- Posts: 159
- Joined: Fri Sep 15, 2017 11:04 am
- I drive a: 2.0 TDI 140
- In: Night Blue
- With a: DSG box
Re: error code
Yes i do have the light on,where is the throttle body on the diesel?Cuprabob wrote:Check the connections at the throttle pedal assembly and the throttle body. Do you have an EPC light warning light on?
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blz-8027
- Posts: 159
- Joined: Fri Sep 15, 2017 11:04 am
- I drive a: 2.0 TDI 140
- In: Night Blue
- With a: DSG box
Re: error code
I do have an issue with the stop start system, apparently i need to code the battery to the car ,i dont think the 2 are related though as the stop start is disconnected ,i get an error when i connect it back upCuprabob wrote:Another thought has sprung to mind. As you've just replaced the batter, you maybe haven't given the throttle body a chance to synchronise.
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Cuprabob
- Posts: 5036
- Joined: Sat Aug 07, 2010 2:31 pm
- I drive a: GT 2.0 TDI 170/184
- In: Rising Blue
- With a: Manual box
- Location: S/W Scotland
Re: error code
If you follow the air intake path, you'll find it. If you switch the ignition on and have someone operate the throttle pedal you should hear the servo motor operating.blz-8027 wrote:Yes i do have the light on,where is the throttle body on the diesel?Cuprabob wrote:Check the connections at the throttle pedal assembly and the throttle body. Do you have an EPC light warning light on?
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Cuprabob
- Posts: 5036
- Joined: Sat Aug 07, 2010 2:31 pm
- I drive a: GT 2.0 TDI 170/184
- In: Rising Blue
- With a: Manual box
- Location: S/W Scotland
Re: error code
I'm not sure, it could be that the start / stop is disabled because you have an EPC issue. A lot of the systems are interlocked.blz-8027 wrote:I do have an issue with the stop start system, apparently i need to code the battery to the car ,i dont think the 2 are related though as the stop start is disconnected ,i get an error when i connect it back upCuprabob wrote:Another thought has sprung to mind. As you've just replaced the batter, you maybe haven't given the throttle body a chance to synchronise.
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blz-8027
- Posts: 159
- Joined: Fri Sep 15, 2017 11:04 am
- I drive a: 2.0 TDI 140
- In: Night Blue
- With a: DSG box
Re: error code
I disabled the stop start ages ago as i didnt like it much ,decided to reconnect whillst the battery was out ,and try it again to see if fuel consumption was much differentCuprabob wrote:I'm not sure, it could be that the start / stop is disabled because you have an EPC issue. A lot of the systems are interlocked.blz-8027 wrote:I do have an issue with the stop start system, apparently i need to code the battery to the car ,i dont think the 2 are related though as the stop start is disconnected ,i get an error when i connect it back upCuprabob wrote:Another thought has sprung to mind. As you've just replaced the batter, you maybe haven't given the throttle body a chance to synchronise.
first time it activated at some traffic lights ,it threw an error and said start car manually then the red battery light on the dash stayed on ,so i disconnected it again
Thanks for the replies