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Discussion Starter #1 (Edited)
So I recently bought a 01 NB Gls 1.8t.. Black, love it so much!
After 6 days of owning it I was pulling into the parking lot at my work. I'm a delivery driver. And the sleeve that connected my CAT to my muffler slid and my CAT hit the ground! Pulled out both of my O2 sensors. I was able to jack it up and get to a muffler shop the next day. Got the exhaust 'fixed'. The one thing I didn't know put back on(limited funds) was the O2 sensors. I asked the guy over and over again "will this be fine?, will this be fine?" To which he replied "oh yeah, don't worry it will be okay, not an important part." So I trusted his judgement considering he had been in the business over 20 years. I was pulling onto the road for another late night run, this time I had about 5 runs in my car. As soon as I took the corner, my car was put in to the EPC limp mode. Ever since then I have not been able to drive my new car. I guess what the guy didn't tell me is that his guys left the bare striped wires going to O2 still attached. Now I am pulling these codes:

P0134 - Oxygen Sensor circuit - no activity (pre-cat)
P0140 - Oxygen Sensor circuit - no activity (post-cat)
P1102 - Oxygen Sensor heater circuit, short to B+ (pre-cat)
P1118 - Oxygen Sensor heater circuit, open (post-cat)
P1136 - Fuel trim too rich at idle
P1198 - Oxygen Sensor heater electrical malfunction (post-cat)
P1631 - Accelerator pedal sensor no.1 signal too high
P1634 - Accelerator pedal sensor no.2 signal too high

I also just got in back from the stealership who wanted to charge me $2700 to replace the ecm on top of the 300 to diagnose fee which they would not wave. They also would not guarantee my car would be running and suggested that after the replacement there would be further diagnoses.

I know it's a read but let me know what you guys think

Thanks,
IonPositive
 

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5/23/10 <3
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If I'm reading this correctly, the muffler shop guy said that the O2 sensors weren't important? He's an idiot. You need those sensors, which is why you are getting the codes. You need to get those back in.

Why did the dealership say they needed to replace the ECM? I don't see anything that would suggest that needs to happen.
 

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Discussion Starter #4
didnt work

Just popped in my o2's.. still in limp mode
:(
Not sure where to go next
Is there a way to reset it or do I need to reprogram the computer maybe ?
 

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I had to reset my car by touching the positive and negative battery cables for 30 seconds (both removed from the battery) and then the computer fully reset, trouble codes went away (when I installed the new 02 sensor; I had cleared the codes and they came back with the same codes as before). Did you test your sensors with a multimeter and confirm they were bad? What brands of 02 sensors did you buy and what part #'s? Bosch is the best way to go (original oem) and you can look up the part here:

http://www.boschautoparts.com/vehiclepartfinder/pages/vehiclepartfinder.aspx

Please post any and all codes that are coming up and also what the brand, part #'s of the sensors were.
 

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Discussion Starter #6
I had to reset my car by touching the positive and negative battery cables for 30 seconds (both removed from the battery) and then the computer fully reset, trouble codes went away (when I installed the new 02 sensor; I had cleared the codes and they came back with the same codes as before). Did you test your sensors with a multimeter and confirm they were bad? What brands of 02 sensors did you buy and what part #'s? Bosch is the best way to go (original oem) and you can look up the part here:

Bosch Vehicle Part Finder

Please post any and all codes that are coming up and also what the brand, part #'s of the sensors were.

Part #'s
17014 on the front
16978 on back

Codes:
P1639 - APP sensors 1/2 fault
P1634 - APP sensor 2 signal too high
P1631 - APP sensor 1 signal too high
P0138 - O2 sensor circuit signal too high(post-cat)

Mom got the parts on amazon and they said they were right but I see they do not match the bosch part finder. I didn't check the voltage readings when I was down there but I meant to. We have an APP sensor handy so we are going to throw that on.. But to be completely honest I just jammed that second senor in so it could easily be the issue.
 

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What scanner are you using did you do a hard reset of the ECM by touching the positive and negative battery cables together for 30 seconds?


Sent from AutoGuide.com Free App
 

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Discussion Starter #9
I also replaced the gas pedal and did another hard reset.
I am start to think this is a wiring problem. Was wondering if it is fix able if so and what would the part be?

I was also wondering if me jamming the o2 sensor connector into the other side could play a role. The colors all matched right so I figured as long as the pins are touching.

ANd to go more in depth my scanner is a Innova 3130c. I keep clearing the codes but they don't go away.
 

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If they keep coming back and you have tried clearing the ecm by the scanner and by touching the battery cables. Then most likely you have a "hard fault"; so that typically comes down to:

1. wiring problem
a. test the wiring (look in the service manual for instructions); check for physical damage in the wiring, plugs, sensor pins/connector etc.

2. component failure/bad/wrong part

a. make sure the parts are the right ones (could be incompatible with your car)
b. test/compare the the old/new sensors for correct operation
 
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