Question about 2005 Volkswagen Passat
You need to pull the codes, however, check engine is generally emissions system. Which in general terms means you may need a new 02 sensor..but check engine light can be any of numerous sensors, map, mad, ecg, iac, 02 etc. I would check n change the oxy sensor with that many miles..cheers.
Posted on Nov 14, 2017
Should be take it by auto zone have them check for codes . It is free in most states.
Posted on Nov 14, 2017
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Posted on Jan 02, 2017
Blinking engine lt. Poor performance-barely make it up a hill.
Mechanic said bad O2 sensor--Replaced--had same problem-
Used "ADVANCED AUTO" Diagnostic meter---FREE FREE FREE
Code read MISFIRE
Replaced COIL pack!!!!!!!!!
Returned to Advance auto to clear codes---
NO CHECK engine light --runs like new
Believe the COIL pack went bad causing the sensor to clog and go bad--Probably could have just cleaned it.
Cost $200 parts and free labor>LOTS of bad words,gerasy hands and good running car
HOPE THIS HELPS SOMEONE
Posted on May 02, 2009
get a new coolant temperature sensor.
the orginal black ones are faulty.
make sure it is the green topped one.
also do a normal tune up with spark plugs, clean the maf, maybe replace coils packs.
Posted on Jul 11, 2009
SOURCE: Check Engine Light - P2181
Hi,first thing your cambelt and tensioner should have been replaced 13k miles ago,it would pay you to replace the water pump at the same time as they are known for impellor failure = cooling system fault=P2181 code,hope this helps.
Posted on Aug 06, 2009
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