Throttle Position Sensor

Tiny
OTAMOLLOY
  • MEMBER
  • 2000 HONDA CIVIC
  • AUTOMATIC
  • 125,000 MILES
I own a 2000 honda civic dx. The engine light came on and I went to an auto part store near the highway that said the code was Po122 -- throttle position sensor error. I was told the part costs 46 dollars. Took it to a mechanic who charged 97 dollars for "pinpoint" inspection and told me the entire housing would have to be replaced and not just the 46 dollar part -- total cost 750 with labor. Is he telling the truth or is there a cheaper soluition?
Friday, January 14th, 2011 AT 10:39 PM

4 Replies

Tiny
RBERQ
  • MEMBER
  • 16 POSTS
In case anybody else hates the idea of spending $700 for an entire throttle body, the throttle position sensor IS replaceable on a 1996 - 2000 Civic and a lot of other Hondas as well. Get a new TPS from NAPA or buy a Dorman brand over the Internet, $25 to $50. The TPS attaches to the throttle body with two bolts, but the bolt heads look like screw heads without a slot for the screwdriver. Use a Dremel tool or even a hacksaw to cut a slot in the bolt head, remove the bolts with a screwdriver, get new bolts (with heads!) From the hardware store, and attach the new TPS. You need to adjust the new TPS by rotating it slightly so the voltage reading on one of the wires (I forget which) is 0.45 volts with throttle closed and ignition switch on but engine not running.

I don't know if the shops are ignorant or just greedy, following Honda's recommendation to replace the whole throttle body. The shop that told me to spend $700 knew the truth but didn't tell me. When I told THEM I had the aftermarket TPS, the boss immediately said, "Sure, we can put that on for you." But I was so mad by then that I had a different shop do it and will not go back to the first shop ever again.
Was this
answer
helpful?
Yes
No
+1
Wednesday, March 17th, 2021 AT 6:42 PM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

The code: P0122- A low voltage problem in the Throttle Position (TP) sensor circuit.

This code gets triggered either due to a bad throttle position sensor or the sensor not getting correct amount of power.

I have attached the trouble shooting guide below. It will help pinpoint the issue. You will need to use a multimeter for this guide.

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Please let me know of any questions.
Thank you.
Was this
answer
helpful?
Yes
No
+1
Tuesday, October 12th, 2021 AT 9:56 PM
Tiny
SINIXOTH
  • MEMBER
  • 2 POSTS
I’m also facing difficulties with this part. I broke off one of the screw mounts and the side wall of where it connects the TPS, and it wouldn’t be very fixable. I looked online for a replacement, and I could not find a single decent one anywhere, even aftermarkets are around 10 mm too big, so I’d have to change my intake situation pretty drastically, and that’s expensive. Any solutions? Searching junkyards ASAP.
Was this
answer
helpful?
Yes
No
Friday, December 10th, 2021 AT 3:59 AM
Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Those are hard to find online or aftermarket. Salvage yard is likely the best option. But then again it will depend on if they have one of those vehicles with the piece that you need.
Can you upload a picture of what you are dealing with?
Was this
answer
helpful?
Yes
No
Friday, December 10th, 2021 AT 9:43 AM

Please login or register to post a reply.

Sponsored links