How do I reset the check engine light on a 1997 VW Jetta

Hi James, Check all the fuses and in particular the connection cables to the battery. The circuits you have mentioned are auxiliary to the starter and operate through relays. One of those is a main relay and that is where I would check. Regards John

First off, let's simply define the OBD-II Trouble Codes:
Yes, 18032/P1624/005668 are the three codes that indicate "MIL Request Signal Active."
So, what does THAT mean (in plain English)??? This means that Fault Codes are stored in the TCM. SO WHAT'S THE SOLUTION?
MyAirbags has a reset solution for 04-07 VW Jetta 1.8L/2.0L https://www.myairbags.com/product/vw-jetta-2004-2007-1-8l2-0l-ecu-ecm-pcm-repair/ as well as the VW Jetta 02-06 2.5L/2.8L
https://www.myairbags.com/product/vw-jetta-2002-2006-2-5l2-8l-ecu-ecm-pcm-repair/
You need to have the TCM reset to its original status. https://www.myairbags.com/how-it-works/ecu-ecm-pcm-tcm-unit-repair https://www.myairbags.com/engine-control-unit-repairs-ecu-faqs

Check the O2 censer. its probably bad.

You can find the reset procedure here

https://resetoillight.com/volkswagen/oil-change-light-reset-volkswagen-jetta-2005-2006-2007/

The firing order for a 1997 VW Jetta with a 2.0 liters engine is: 1 - 3 - 4 - 2 .
The number one cylinder on the cap is marked by the black dot in the picture below:



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Must hookup computer scanner to obtain diagnostic codes. Problem must be repaired to keep light off.

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1997 Volkswagen Jetta
2.0 liter SOHC L4 (ABA)

Sounds like it could be a mass airflow sensor failure. Take your car do your reputable mechanic and have them scan your computer to find out what the error code is, and then go from there. If it says that the mass airflow sensor is offline, I would look to make sure that the connector is properly secured on the air intake hose.

Only with diagnostic equipment.Visit VW dealer.

it could be a 1.8 or 2.0 you must check the engine tag under the hood look for a white factory sticker it has the engine size printed on there under engine family.