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Old 20-04-2017, 10:55   #1
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Join Date: Jun 2016
My Car
Posts: 112
Evo X Playing Up

My car is a 300 SST and is completely stock but started throwing up P1235 error codes a month 2 after I installed a CTEC cat-back on it.

I was told it was probably the MAF sensor so I sourced a new one and everything was fine for another couple of months, then P1235 showed up again!

I have replaced the fuel pump relay (twice for good measure) which hasn't done anything.
Got the car serviced at CPP (with SST oil/filters changed to keep it happy).

Took the car to Ireland recently and the code kept popping up along with P1870 code as well though this time.

Yesterday it came up with Service Required which then went away after restarting the engine.

Most of the time it comes up in 4th gear and above (I think).

Can you think of what it could be, or what I should be getting it tested for? Could it be the cat-back? Seems unlikely.

I will be coming for a remap with you guys this summer, but I can't do anything until I fix this problem first!

I really need some direction/help with this.
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