Question about 1995 Geo Prizm

2 Answers

Does anyone know what the code 21 means on the check engine light. I dont have a manual. I have a 1995 Geo Prizm. Please help if possible.

Posted by on

  • catwoman_420 Aug 01, 2009

    Actually I found out that on a 1995 Geo Prizm code number 21 is for the Throttle Position Circuit Signal Voltage being high. This was looked up in a manual for me. But do you guys know for sure about the o2 sensor because that is a lot cheaper to replace.

×

Ad

2 Answers

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,011 Answers

The code would be your o2 sensor which probably should be replaced:)

Posted on Jul 22, 2009

  • mike loshbough
    mike loshbough Aug 02, 2009

    Sorry you are right it is the throttle position sensor code :)

×

Ad
  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    President:

    An expert whose answer got voted for 500 times.

  • Master
  • 1,776 Answers

The fault code 21 on the Geo Prism indicates a problem with the oxygen sensor. It should be located in pipe right after the exhaust manifold. Sure hope this helped and good luck to ya!

Posted on Jul 22, 2009

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Does anyone know the output of a cmp in a 1996 geo prizm 1.6L? It's in the distributor.


its a 5v square wave.

you can see that at alldata dot com.

the 1996 will throw a DTC for CMP , DID IT?
if engine is dead, the DTC shows up cranking,
with a code or RPM dead.
In USA< can speak for Canada, where are you, uSA or canada.

Jul 30, 2013 | 1996 Geo Prizm

1 Answer

How to check engine light codes on a geo prism


There should be a Diadnostic Plug box located just behind the air filter flip the lid open. If it looks like the one in this link (on page 2) http://buy1.snapon.com/products/diagnostics/downloads/manuals/AsianImportVCS%28EAZ0025B02CRevA%29/10%20GeoTesting.pdf connect the E1 and Te1 with a piece of wire or paperclip turn the key to ON position and the Check Engine light will flash the codes.

Aug 19, 2012 | 1995 Geo Prizm

1 Answer

My geo metro is flashing trouble code 12. But seems to be running fine. I've disconnected the battery but it still flashes when connect the battery again. Any ideas what the problem could be?


Code 12 means the ECM is functioning correctly. No trouble codes stored.
Is there an actual problem with the car ?
Is the check engine light staying on ?

Aug 06, 2012 | 1995 Geo Prizm

1 Answer

Engine light on my 96 Geo Prizm


Cant know until you have a code to look at. Take it down to your local autozone pepboys or O'reilly's auto parts stores, they will read the codes for you free of charge

Apr 26, 2010 | 1996 Geo Prizm

1 Answer

Check engine light turns on when I get on the highway...what can I check to fix this problem?


The best place to start, is{ have it scan done} / you can have this done by Auto Zone / at no charge / then post the code here with a description of any info .that could be relevant / Don't just assume that a code that gives a sensor fault means that the censor is bad, / for examples o2 sensor code doesn't mean that the o2 sensor is bad / it could be telling you that the fuel filter is restricted/ or that the exhaust is / please let us know what you find out also let us know if this info was helpful. looking forward to assisting you in the future should you need any more assistance. feel free to ask . . Thank You.

Apr 03, 2010 | 1995 Geo Prizm

1 Answer

Code error for O2 sensor?


Code 21 the check engine light will flash 21 times cycle the ignition key ON-OFF-ON-OFF-ON within 5 seconds. To cycle the ignition key ON means to turn it only as far as it takes to get the radio to come on. It does not mean to turn the engine on.

Aug 29, 2009 | 1995 Dodge Neon

2 Answers

Check engine light, will it turn off by itself?


If you want to want to be the handyman, disconnect the negative terminal from the battery and turn your lights on, this will drain all electricity in your car allowing your codes to reset. You should wait 10-15 minutes before reconnecting the battery. The safest way is to take it to auto zone or your mechanic autozone will do it for free and only take about 5 minutes of your time.
Hope this helps

Sep 22, 2008 | 1996 Geo Prizm

Not finding what you are looking for?
1995 Geo Prizm Logo

Related Topics:

381 people viewed this question

Ask a Question

Usually answered in minutes!

Top Geo Experts

yadayada
yadayada

Level 3 Expert

76649 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22219 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8518 Answers

Are you a Geo Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...