A Chilton/Haynes manual for your vehicle has the codes. Will also give other ideas on cause for non-passage of emissions. It could be as simple as a good tune-up (new plugs, wires, etc), or as spendy as new catalytic converter.
SOURCE: 1997 ford escort speedometer not working
Well our escorts are built in liverpool uk and valencia here in spain,and if this is the problem with the autos many thanks for the info as it always comes in handy providing that i can remember it all .When you are a general mechanic like myself and not a dealer only so to speak ,then you have to fault find as you go along and work from basics.Now this is all very well on older vehicles but some of these new ones i cant evan change a battery without the immobiliser cutting in.Some of the newer mercs and VWs i cant evan change the oil or the brake pads without the immobiliser coming on.Also please dont mention the real bane of my life -----RENAULTS---and encrypted software .How these cars do in the states where the OBDII plug is connected into the car to test the emmisions ,with their renault only plug connector layout and encrypted software that would do mossad or the cia proud i can only wonder ??
SOURCE: emission test showed error code p1443.check engine
You might want to try "google images" just type in your vehicle and what your looking for. Here's an example (link) of what to look for.
http://www.fordmuscle.com/forums/attachments/all-ford-techboard/4132d1212515121-code-p1443-help-96tbird_evap.jpg
SOURCE: Engine light on-trouble code P0452
EVAP fuel tank pressure sensor low output. It sounds like the charcoal -filled canister, it's near the gas tank in a cylinder shape.The canister may have cracks or a hose is leaking around the area and it will give a fault code of PO452. Are you smelling any odors or emission smell from the car?
SOURCE: mine want pass emissions high
Many things can cause this, so I'll just try to hit the high spots.
1. Poor fuel ignition (bad plugs, wires, cap, rotor, etc.
2. Improper Ignition Timing
3. Lean air fuel ratio mixture
4. Defective Catalytic Convertor
5. Defective Air Injection System.
6. Low Compression
These are general things that can cause this condition, but they may not be applicable to your particular vehicle.
Try a good old fashioned tune up: Plugs, wires, cap, rotor and points (if applicable) and a new air filter.
Wouldn't be a bad idea to also change the oil and oil filter.
The final item (#6) is a sign of a well worn engine and if this proves to be the primary problem, I'm afraid a engine rebuild is in order.
Anyway, good luck!
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