Engine Management Light - Code P0121

[Automattick]

Hey all,

This week I have had an engine management light come on twice.

It seemed to be under identical circumstances: -

Drive ten minutes home from train station when i get home, put car into reverse to park start reversing slowly and bam light comes on.

This happened tuesday i think it was so i read the code but didnt clear it as I wanted to see if it would clear itself. Stayed on when I used the wednesday but was back off this morning.

Parked car under same situation mentioned above and the light came back on tonight???

I have seen a post with the same code and I think it was suggested it was a dodgy sensor or throttle body?

Cheers,
Chris

[ARAF]

I agree, the code is for the throttle position sensor. I guess the cheapest option first, is to disconnect the battery for 10 minutes, and see if this resets it? Then I'd look at checking the electrical plugs, to make sure they are tight and clean, and check the wiring is in good condition and not worn anywhere.

Failing that, give the throttle body a clean? And if that fails, I think you're into the realms of replacing parts.

[pah250]

I've had this before on the old car. I think the new part from MF was around 150 quid to resolve it.

[Automattick]

Thanks guys for the quick reply.

I havnt long had a service with MF so I might give them a ring tomorrow and see what they think aswell.

Just looked on MF and a throttle body is £429 am i right in thinking there are two tps sensors and they are contained in the whole unit which is sealed hence needing an entire TB.

For that price how much is a Fast 102 including a throttle body?

Well I think it may be a good idea to get the car into the garage.

Any further help welcome.

Thanks,
Chris

Edited by Automattick on Thursday 25th September 23:26

[Automattick]

Thanks guys for the quick reply.

I havnt long had a service with MF so I might give them a ring tomorrow and see what they think aswell.

Just looked on MF and a throttle body is £429 am i right in thinking there are two tps sensors and they are contained in the whole unit which is sealed hence needing an entire TB.

For that price how much is a Fast 102 including a throttle body?

Well I think it may be a good idea to get the car into the garage.

Any further help welcome.

Thanks,
Chris

Edited by Automattick on Friday 26th September 00:40

[SturdyHSV]

A Fast 102 without throttle body is typically about $800 - $1,000 so shipped and VAT etc. will be similar money over here, unless you can find a used one somewhere. For reference, the Fast works with the stock throttle body as well as the larger 102s.

[jameshsv]

Lsx 102 fast intake with 102 TB is about 1.3k

[throwyourbike]

When the throttle body on my LS2 Monaro was on its way out it happened very randomly and the car went straight to limp mode. The first time I was decelerating, the second time I was at full throttle and the third time I was just cruising at a steady 40mph. Plus if I turned the car off and back on again it went back to normally.

It's odd that your seems to happen under specific conditions.

[Automattick]

Hey guys,

Yea ThrowYourBike, I thought it weird that it seemed to do it under identical conditions as in same trip home from work and parking exactly the same.

Touch wood now after giving the connections a check over and the car a run the light has gone off and not returned as of yet.

I think I'm going to keep an eye on it and if it gets worse then its gonna be a new throttle body job I think.

Regarding the Fast I have noticed that actually buying them in isnt such a problem - around the £500-£600 but I have no clue on what to expect from the import duty and any other charges.

I checked a price and used an import calculator and it came out at around £850 to the door for a Fast102 but who knows how accurate that is. Thats probably best kept for a seperate thread.

Thanks again for the help,
Chris

[stevieturbo]

Automattick said:

it and if it gets worse then its gonna be a new throttle body job I think.

Regarding the Fast I have noticed that actually buying them in isnt such a problem - around the £500-£600 but I have no clue on what to expect from the import duty and any other charges.

Chris

You'll expect to pay VAT at 20% on the total cost of the goods incl shipping, and around 3-5% import duty on the cost of the goods themselves.

That is however if the dirty bds actually release your goods and dont hold the bloody things for days for no fking reason, despite having paid a fortune for expedited shipping.
They just seem intent on making peoples lives misery when trying to get parts sorted for their cars, and asking the most stupid fking questions.





Not hard to guess I'm having issues at the minute LOFL