Diagnostic Codes - Mercedes Benz SLK Forum

SLK R170 General Discussion SLK 200, SLK 230K, SLK 320, SLK32 AMG

 
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#1 Old 06-30-2015
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Cool Diagnostic Codes

I need your help. My check engine light came on, so I drove to a local auto store to have the codes downloaded. As a result, the technician gave me these codes:
P1525, P1420 and P 1235. Whats the best way to take care of these codes? I've owned my ride since Nov of 2014 and this is the first issue I 've had. I noticed the check engine light came on after I put fuel in the car. I 've checked the gas cap to ensure its on secure. Any help is appreciated. Thanks.
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#2 Old 06-30-2015
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I once had a cel and it was the seal around the gas cap so check that is is pliable and not dried out

http://slkguide.com/pages/diy/obd-codes.php

https://www.slkworld.com/slk-r170-cla...obd-codes.html


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#3 Old 06-30-2015
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P1420 Catalyst Temperature Sensor Failure

P1525 Air Bypass Valve System

P1235 Fuel Pump Control Out Of Range


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#4 Old 06-30-2015
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Any symptoms? Low power?
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