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P0300

P0300 is a Random Cylinder Misfire.  The computer will flag this code if it sees multiple misfires on different cylinders.  The engine could be misfiring on two different cylinders or it could be misfiring on all cylinders causing a P0300 code in the computer. Possible causes There are many factors that will cause the engine Read More…

My car won’t start

Why wont my car start? Engine cranking over and not starting? Engine not even cranking over at all? Why wont my car start? All of these are very good questions and it can be very frustrating at times when your engine is not starting. There are a few different kind of no start conditions and Read More…

GM VATS, Passkey and Passlock

How To Bypass VATS PassKEY and Passlock Systems in GM vehicles I cant tell you how many times I have seen this on GM vehicles.  The security system goes south and leaves you stranded.  It is very frustrating and you cannot afford a big repair bill to get your vehicle back up and going.  It Read More…

OBD2 Codes

OBD2 Diagnostic Trouble Codes Ever wonder how many Diagnostic Trouble Codes or OBD2 Codes can be set by your engine computer (ECM/PCM)? Well, here is a list of all the generic (not manufacture specific) OBD2 Engine Diagnostic Trouble Codes. If you know what OBD2 code is already but would like some help in diagnosing the Read More…

Honda Accord Main Relay

Honda Accord Main Relay The honda accord main relay can cause you major head aches when it goes bad.  It can leave you high and dry at the most inconvenient time or place.  Not only have I seen go bad myself on numerous occasions, but I hear about this a lot on other Honda vehicles!  Read More…

Rough Idling

Have you ever experienced a rough idling condition on your vehicle? Maybe you have a rough idling condition and that is what has lead you to this site. A rough idling can occur for many different reasons. On this page we after going to be discussing some different things that can cause your rough idling Read More…

P0401

So you have changed the EGR valve and this code continues to pop up in the computer. You are frustrated and ready to drive your car off of a cliff. What does this code mean anyway? The correct definition for this diagnostic trouble code P0401 is “Insufficient EGR Flow Detected“. YES.. your EGR valve could Read More…

p0420

P0420 diagnostic trouble code is a “Catalyst Efficiency Below Normal” on bank one. This applies to vehicles equipped with OBD2 only. It basically means that your computer has detected that the Catalytic converter has failed on bank one. (Bank one is the side that the number one cylinder is on.  Bank two is the other Read More…

P0171

P0171 is a very common code for any ODB2 vehicle. I have have been dealing with this diagnostic trouble code for years on many different year make and model vehicles. Everyone always asks me is “what is the fix for this diagnostic trouble code?” Everyone thinks there is one fix for all. I hate to Read More…

How to check fuel pressure

Checking fuel pressure is very vital in diagnosing an engine performance issue. If you have low fuel pressure, it can cause all sorts of engine performance problems such as a hard start, low power, poor emissions and even bad gas mileage.  If it goes on too long untreated, the computer will pick this up as Read More…