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Discussion Starter · #1 ·
I have a 2001 jetta vr6.
It has a cel and the dreaded "emissions workshop" message. Took it AZ and got the following codes. P1116,
P0300, P0301, P302.
AZ looked them up for me. I looked them up when I got home. Agreement in P03xx, random misfire, and cyl x misfire.
Disagreement on P1116. AZ = engine coolant sensor out of range/ECT sensor our of range of Self Test range.
VW DTC = O2 sensor circuit Bank 1, Sensor 1 open.

the VW DTC guide also said that P0116 was ECT sensor out of range.
help also on locating which O2 sensor in Bank1 sensor 1. before or after the cat. Also, whrere is the ECT sensor. (please not in TS housing)
BTW, I did had coolant leaks, changed the coolant pump (mech), radiator, and hoses. Found help here in FAQ.
I also repalced sp wires, and plugs. (Autolite dp set at .040; autolite says .040, VW advisor says .032)
Car did not run for last 3 mos. Old gas. Have about 20 miles since wires and plugs were installed. ( It's only money) It goes really fast again but still has codes. I'm in an emmission inspection (Dallas, TX) area and it must pass or no drive.
Thanks.
 

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Discussion Starter · #3 ·
Re: P1116 code from AutoZone test.... (VgRt6)

Thank you for the prompt reply and the DIY info.

Do you know which sensor that the P1116 code is referring. Also, why different references give different reasons for the code. Is one generic for domestic cars, and the other specific to VW??
 

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Re: P1116 code from AutoZone test.... (jpwwww)

P-codes are an SAE thing and have very generic descriptions applicable to cars in general. VW has specific code numbers and more detailed and accurate descriptions.
I'll look up that code on my VW diagnostic CD tonight and let you know what it says.
 

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Discussion Starter · #6 ·
Re: P1116 code from AutoZone test.... (708VR6)

Man, Thanks a lot.
I think. I'd rather change out the O2 sensor, (more $$) than tackle that ECT and thermostat (more time, @$%^&**, soggy clothes).
Since the code is for the O2 heater circuit being open, does that call for replacemnt of the O2 sensor, or could it be a wiring problem that can be tested and/or repaired. Is there a relay or fuse that controls the heater circuit? Can I do a voltage or resistance check of the O2 sensor with a Digital Multimeter?
Sorry for all the questions, but just an ol' country boy trying to make the best choice for time and money.
Thanks, again.
 

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Re: P1116 code from AutoZone test.... (jpwwww)

The O2 sensors are actually "relatively" cheap for our cars. http://www.1stvwparts.com has it for $54.90 (part# 021906262B). The code could be from any of those things listed, but it's most likely due to a bad sensor. You should be able to check the sensor with a DMM, but I'm not sure what values to tell you to look for.
I checked the Bentley CD for P1116 and it says it's an open heating circuit in the pre-cat O2 sensor. I would guess that it's time for a new sensor. You can check the heating circuit with a VAG-COM and if you find someone near you with one, I can tell you how to do that.



Modified by VgRt6 at 8:46 PM 8-21-2006
 

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Re: P1116 code from AutoZone test.... (708VR6)

obviously the heater circuit is toast on the o2, they have a built in heater to bring them up to temp till the engine exhaust gets hot enough to keep the o2 hot and "happy"
 
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