2004 Pontiac Grand Prix GT, Knock sensor replacement and now Low voltage bank 2

Asked by Jan 14, 2015 at 08:46 AM about the 2004 Pontiac Grand Prix GT2

Question type: Maintenance & Repair

I have a 2004 Pontiac Grand Prix GT. My engine light came on and I went and had the code reader attached and it said to replace knock sensor. Well we replaced BOTH of them. This did not make the light go off, I had the codes read again, and now it is saying " Low Voltage Bank 2" ... Will not pass emissions. I only have 65,000 miles on my car and I am the ONLY owner. I have taken care of it, but this is really getting to me. I have searched for a wiring harness replacement, cant seem to find one or there is no such part. Any suggestions?

5 Answers

8,110

You can write down your codes and google them. You can research possible causes at enginecodes . com You can look up the pinpoint tests and perform them. You can consult your GM dealer before investing in your findings. Research for recalls and TSB's can be sought in an automotive database, this can tell you if updates or corrections are in order for your vin, recalls, service bulletins, code check, determine hard faults, pinpoint tests and diagnosis. In that order.

1 of 1 people found this helpful.
130

What is the exact code?

8,110

Wiring harness repairs may be specific to the connector at fault. They are a dealer item most likely and quite expensive when the repair kit and the ends can be found by the dealer. I suggest continuing the diag the way it is laid out and determine what the results of the testing are. Sounds odd the reader would tell you to replace something. More like a code, and then a definition. This is designed to indicate tests. Low voltage bank 2 indicates a condition, but about what ? any sensor can be powered and a return signal is expected, but We need the rest of the info. Your dealer may be able to tell you what is what in the service drive in a few minutes because they deal with GM cars all day. You can establish a rapport, get your recalls done and have your info in their computer. compare service prices while you are there. when I worked in dealers we always did more correct and complete servicing for less than the lube bubes.

I am having same problem knock sensor code! I found the one behind motor but where is the second? I have 04 GT as well...GM has ur harness and u can order it threw advanced auto or auto zone they will ship it

also crankshaft position sensor circuit was a code P0336 I am having trouble with my ABS kicking on when I hit my brake...it started last week. no ABS light or TC light comes on. would knock sensor or crank sensor have anything to do with ABS....HELP!!!

Your Answer

Add photo

Related Questions

  • 2004 Pontiac Grand Prix GT 1 answer

    My engine light is.on, had a diagnostic check at Auto Zone it stated it was Knock sensor, so we replaced BOTH knock sensors since we were doing it.... Reset the computer and went to get inspecte...

    2004 Pontiac Grand Prix GT2

    -

    Maintenance & Repair

  • 2004 Pontiac Grand Prix Ask me any questions 39 answers

    I have totally replaced and rebuilt this car. I have experienced some major obstacles and solved them. I have experience with this year model Grand Prix. I may be of some help to others.

    2004 Pontiac Grand Prix GTP

    -

    Maintenance & Repair

  • What is the max milage that a Grand Prix can get? 46 answers

    My grand prix is a 99 and it has 119,000 miles on it. How much longer can it go?

    1999 Pontiac Grand Prix 4 Dr GT Sedan

    -

    Maintenance & Repair

  • 2001 grand prix gt I NEED HELP 5 answers

    2001 Pontiac Grand Prix GT isn't getting enough fuel to one of the Pistons what do I do, my service engine light came on earlier today

    2001 Pontiac Grand Prix GT

    -

    Maintenance & Repair

  • Trying to take motor out of 2004 Pontiac grand prix and put into 1997 pontiac grand prix 6 answers

    Trying to put 2004 Pontiac grand prix motor in 1997 Pontiac. Grand price gt.

    1997 Pontiac Grand Prix 4 Dr GT Sedan

    -

    Shopping & Pricing

Grand Prix

Looking for a Used Grand Prix in your area?

CarGurus has 2,871 nationwide Grand Prix listings starting at $900.

ZIP:

Search Pontiac Grand Prix Questions

Pontiac Grand Prix Experts

#1 Js08016
Js08016
Reputation 4,160
#2 Tom Demyan
Tom Demyan
Reputation 2,830
#3 munron
munron
Reputation 2,180
View All

Related Models For Sale

Used Chevrolet Impala
521 Great Deals out of 31,726 listings starting at $1,450
Used Pontiac Bonneville
3 Great Deals out of 533 listings starting at $1,799
Used Chevrolet Monte Carlo
21 Great Deals out of 1,408 listings starting at $1,995
Used Pontiac G6
83 Great Deals out of 4,115 listings starting at $699
Used Pontiac Grand Am
1,215 listings starting at $1,999
Used Pontiac GTO
5 Great Deals out of 452 listings starting at $6,000
Used Ford Mustang
476 Great Deals out of 45,735 listings starting at $1,999
Used Chevrolet Malibu
948 Great Deals out of 79,656 listings starting at $1,500
Used Chrysler 300
413 Great Deals out of 19,932 listings starting at $1,000
Used Honda Accord
813 Great Deals out of 84,287 listings starting at $1,050
Used Ford Taurus
248 Great Deals out of 20,434 listings starting at $699

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.