Broke my Z4 already. Some help with error codes pls.

Tomsdad · Post by **Tomsdad** » Tue Apr 11, 2017 3:16 pm

So I live in Cambridge and the car was advertised north of Glasgow. Took easy jet, viewed the car, bought it and drove nearly 400 miles back home through the early hours. It didn't miss a beat.
Now I've broken it after 5 days.
I was just going to BMW to get oil and air filter. Thought I would check condition of old filter first. So I undid the clips lifted the air box top away and removed the filter. Wasn't too bad but when BMW only wanted £17 for a new one thought I would change it anyway.
I digress.
Engine management light has come on on the way to the dealers.
I plugged the code reader in and read the codes.
1 hard code of P1554 don't know what that is
Multiple pending codes of P 0174 which is running lean.
So logic said that I messed up with the air filter. But surely there is only 1 way to put the filter in???
So I have now taken the air box lid right off and made sure the new filter is seated correctly.
Cleared the codes which turned the management light off. But I'm shitting myself that it will come on again.

Any thoughts

Kind regards

Marlon · Post by **Marlon** » Tue Apr 11, 2017 3:23 pm

if the lights are off and the codes are cleared then be happy

Smartbear · Post by **Smartbear** » Tue Apr 11, 2017 3:45 pm

As Marlon says, it probably just needed time to adapt to the polluted English air

Rob

paddy wright · Post by **paddy wright** » Tue Apr 11, 2017 3:48 pm

P0174 lean can be a crack in the intake boot that lints air MAF to the engine- crack will be on the smaller ribbed pipe (guessing you are in a preface lift car)

Smartbear · Post by **Smartbear** » Tue Apr 11, 2017 3:49 pm

paddy wright wrote: ↑Tue Apr 11, 2017 3:48 pm P0174 lean can be a crack in the intake boot that lints air MAF to the engine- crack will be on the smaller ribbed pipe (guessing you are in a preface lift car)

Looks like the op has an si which doesn't have the smaller diverting snorkel, still possible to split elsewhere I guess though?

Rob

Tomsdad · Post by **Tomsdad** » Mon Apr 17, 2017 6:29 pm

Removed, cleaned vanos solenoids. Soaked in lead free then blown with an airline.
Ticks over now at a rock steady 750 rpm. No error codes.
I will wait a while before deciding it's fixed. But I will then close this thread so expel can see what fixed it.

Tomsdad · Post by **Tomsdad** » Mon Apr 17, 2017 6:30 pm

Removed, cleaned vanos solenoids. Soaked in lead free then blown with an airline.
Ticks over now at a rock steady 750 rpm. No error codes.
I will wait a while before deciding it's fixed. But I will then close this thread so people can see what fixed it.

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