C-Class (W203) 2001-2007, C160, C180, C200, C220, C230, C240, C270, C280, C300, C320, C230K, C350, Coupe

5 error codes at once

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Old Jul 18, 2010 | 05:00 PM
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klower000's Avatar
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2005 c230 Sport
5 error codes at once

Greetings,

So the CEL came on yesterday and I had autozone run the codes. What came back was p0401, 2 p0171, and 2 p0170.

I have research what each one of these mean but what I was wondering is, what would cause all of these come on at once? Any help would be greatly appreciated.

So before I get yelled at about searching, I have research each one but need a cause for all at once. Wasn't able to find someone that has had all at once.

Thank you,
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Old Jul 18, 2010 | 05:13 PM
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Sathinas's Avatar
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S65
Sounds like your EGR system too a crap. EGR pump is bad? Blocked EGR tubing? Bad EGR Sensor? Bad Solenoid?

Who knows without running tests...
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Old Jul 18, 2010 | 08:10 PM
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Glyn M Ruck's Avatar
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From: Llandudno, Cape Town, South Africa
late 2009 CLK 350 Coupe Elegance, '65 Jaguar S Type wires
P0170 Fuel Trim Malfunction (Bank 1)
P0171 System too Lean (Bank 1)
P0401 Exhaust Gas Recirculation Flow Insufficient Detected

As commented above.

Also clean your MAF
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Old Jul 18, 2010 | 09:31 PM
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2019 G70 6MT & 2022 Ford Maverick XL
How many miles on your car?
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Old Jul 19, 2010 | 12:22 AM
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2005 c230 Sport
65,000 miles
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