Changed Crank Sensor and CEL and 3 codes won't clear


New Member
Jun 8, 2021
2004 Mercedes SL55 AMG
2004 SL55 AMG - my brother's car. Sat in the garage all winter and started right up. The car stalled out a few miles down the road. Got it towed to his house and called me. I found that it would run for about 5 minutes and then stall. This was repeatable. I replaced the crankshaft sensor and now it runs fine until it is shut off. Now though, the CEL lamp is lit and the iCarSoft MBII reads 3 codes which can't be erased (or maybe they are, but keep returning). The codes are: P2034-000, P203a-000, P20b7-000.

Both batteries are fully charged and are 1 year old. I also should mention that I have the Central locking module removed as it is blowing the fuse again and I will need to rebuild the pump for the 3rd time in as many years. It's my first message to this forum, but from what I have read here, there is a lot of expertise. Hoping to get some help.

Uncle Kev

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