2005 Volkswagen Jetta Repair Question
Mileage: 124,000 miles.
I am getting a persistant p2626 code after replacing the 02 sensor
Asked by nickextraAnswer
Check/test the B1 O2 sensor wiring back to the computer
What is the B1 wire and how do I test it?
I assum you are referring to the Bank 1 wiring. Is that all the wires coming out fo the o2 sensor (I think there is 6 of them). How do I test the wires?
Did you replace the oxygen sensor with an OEM part?
It was an NTK oxygen sensor. Part number 24324.
Often O2 sensor fault codes are set due the the sensor being out of range of it normal readings and the actual cause is tune related, either being to rich or to lean for what ever reason, the mistake many make is thinking that the O2 sensor is at fault and it is replaced, start checking all tune related items, and if you can get a 5 gas exhaust reading as this will be a big help in finding the actual problem here.
Bloke, the 5 gas analyzer does a lot of wonderful things that's if the Tech knows how to interpret the readings-
You are right there, i used one for years in my business, that and a good scanner, best diagionstic gear you can get.
Someone mentioned to me that if it's running to rich to do an upstream test. I am not sure what is meant by this. I previously took my Jetta to the dealer and they said it had a bad catalytic converter. I took it to exhaust pros to have that changed. About a month prior to these problems I took it into the Jetta dealership to have an oil chance done. During that time they said there was a recall on the coil packs. Not even a month later all these other codes started appearing. I am scheduled to take it somewhere else next Tuesday. I will see if they have a 5 gas analyzer.
Running too rich means too much fuel for the amount of air reaching the cylinders. Check the air filter, and the injectors. Also check the fuel pressure.
