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2007 VW Passat Throwing Codes

by loridasz on May 24 2017, 4:33 PM

2007 VW Passat, 2.0, and it is throwing codes P0171, P0300, P0301 & P0302. I checked compression and found that it was 65-70 lbs. across the cylinders. What should the compression be?

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19 Replies

By aamco25227 Feb 07 2019, 6:21 PM

I would start with a smoke test.

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By waylor22 Dec 31 2018, 1:34 PM

I always look for a min. of 100 psi per cylinder on all cars.

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By 1986chevyman Nov 29 2018, 5:36 PM

If you performed your compression test correctly, those compression numbers sound way too low.

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By vw@passat83 Oct 10 2018, 6:37 PM

LIKE CONSUMERAUTO SAID THAT WAS AN EXCELLENT ANSWER

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By ira logan Oct 09 2018, 9:52 PM

Compression should be around150-160 psi, with no more than around 10% variance between cylinders. I would think there would be some valve timing issue or possible a bent or multiple bent valves,

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By vw@passat83 Oct 02 2018, 5:06 PM

SOUNDS LIKE A HEAD PROBLEM.

THE AVERAGE OF 1 OUT OF 5 OF THOSE ENGINES

MORE THEN HALF THE TIME ITS DEW FROM THE

TIMING JUMPING. AND SMASHING THE HEADS.

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By 1986chevyman Dec 23 2017, 11:04 PM

Your compression should be 150-160 psi, with no more than 10% variance between cylinders. I suspect you have a valve timing issue with possible bent valves,

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By fordtek1 Sep 28 2017, 12:23 AM

if compression is low on all cylinders, id check the timing belt for proper timing. the tensioner probably bad and its jumped time

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By 1962impala Sep 27 2017, 11:19 PM

Fist you should id the compression tests results and see why the compression is low. Then start with a cylinder leakage test to confirm why the low compression. Low compression across all cylinders is pointing to valve timing find that issue and should run like a charm.

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By bigfrank330 Aug 31 2017, 4:13 PM

We have been doing alot of engines in 2.0 turbo vw products for bad ring seal and skipped chains bending valves. Good luck, low compression is an expensive repair no matter what the cause.

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