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07 Freightliner school bus

Created On Friday June 11, 2010 09:10 Diesel Talk
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Joined: Feb 2010

Note Friday June 11, 2010 09:10 View thread in raw text format
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I have an 07 Freightliner school bus with a Mercedes engine. It loses power and throws a "check engine" light mostly when pulling a hill. I have checked the codes with a Cornwell scanner. It has code 58- aux pwm driver #2, current below normal or open ckt. I have checked all the grounds on the vehicle. I tested and replaced the batteries, also tested the alternator. I am starting to think it is a sensor shutting down the fuel, and maybe this scanner isn't telling me everything I need to know. Can anyone help me out?
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