Question about 1998 Toyota Corolla

2 Answers

Fault code 21 and 42 on 98 toyota corolla,can u tell me what sensor it is?

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Contributor
  • 613 Answers

21 oxygen sensor malfunctioning 42 vehicle speed sensor not sending signal to computer here you see

Posted on Sep 15, 2010

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has answered 20 questions.

  • Expert
  • 122 Answers

21 Oxygen sensor voltage remained between .35 and .7V
continuously despite feedback correction
42 Vehicle speed sensor output doesn't reach the computer

Info From:

Posted on Sep 15, 2010


1 Suggested Answer

  • 2 Answers

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

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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Codes po303, po171, po137. po420

2000 Toyota Corolla, P0171 & P0420 codes - YouTube

? 5:43
Jun 13, 2011 - Uploaded by StandardBrandParts
Standard Motor Products presents: Technician's Toolbox "2000Toyota Corolla, P0171 & P0420 codes"

Smoke testing for codes P0171 P0174 - YouTube

? 5:48
Jan 18, 2011 - Uploaded by realfixesrealfast
These two codes mean a V style engine is running lean on both banks. So you have to be thinking - what can ...

How to repair fault code P0171 and reset warning light ...

? 26:31
Nov 27, 2014 - Uploaded by Peter Finn
How to repair and fix fault or error code P0171 and reset warning light Toyota Corolla VVT-i engine. ... Also how to find fault codeusing OBD scanner. ... Trouble shooting a misfire, Code P0300, P0301, P0302, P0303, P0304, P0305, P0306, ... 2000 Toyota Corolla, P0171 & P0420 codes - Duration: 5:43. by ...

Dec 02, 2015 | 2005 Toyota Corolla

1 Answer

I have toyota Corolla 2009 .When i start my car in morning the RPM is 1200 to 1000 without A/C .but After 50 KM Drive when i am on Neutral Mood .my Car RMP is jumping between 800 to 400 .and engine start...

really all you have to do is to take the car to autozone and have the fault codes read for free. This will tell you what sensors are faulty. Take the car to an accredited service centre that specialises in your car and have the problem sensorsfixed.

Dec 29, 2014 | 2009 Toyota Corolla

1 Answer

Why won't my toyota corolla start? Everything else comes on strong but the car won't turnover

run the fault codes and check for cam/crank position sensor fault(broken timing belt/chain)./ Check operation of immobiliser.

Dec 08, 2014 | 2003 Toyota Corolla

1 Answer

1992 toyota corolla running rich

run fault codes to determine if O2 sensors are at fault. Check MAF/MAP sensors Replace air filter. Have a pressure test done on the fuel manifold to check for excessive injector pressure. Check injectors are working correctly and that the seal at the tips is good

May 21, 2014 | 1992 Toyota Corolla

1 Answer

Nze121 engine making rattling sound

run fault codes and look for knock detector sensor faults. The rattling sound is probably detonation from incorrect air /fuel mixture ratio and the sensors are there to tell the CPU so that the timing and fuel mixture can be adjusted to stop it as it is detrimental to the engine.

Dec 02, 2013 | 2001 Toyota Corolla

1 Answer

What is fault code 32 in corolla 1998

Toyota Corolla 2003 1.4 petrol panel shines light bulb labeled p / s retracted while not feel any problem, some time ago a few times when I wanted to turn to the left or right wheel is braked firmly for a few seconds and relax, this is my happened several times please help

Nov 23, 2013 | 1998 Toyota Corolla

1 Answer

What is needed to fix fault codes 14 and 24 for a 1994 toyota corolla

The following is from a Haynes manual for 1993-1996 toyota corolla and geo prism:

Code 14: ignition signal. No ignition signal to the ECM. Check igniter or circuit, ignition coil, ig. switch or circuit, ECM (engine control module or "computer")

Code 24: intake air temperature sensor. Open or short in the intake air temperature sensor circuit. Check intake air temp. sensor or wiring to ECM.

Jan 27, 2011 | 1994 Toyota Corolla

1 Answer

2005 Toyota Corolla check engine light on.Fault code P2716,undefined reading.What does this mean?

Could mean there is one fault causing many faults, example, Air mass sensor, this can cause rough idle and over fuelling so the code reader will just send it back with undefined as there are to many faults to identify as the cause.

Most likely it will be a air fault so check the air sensor first, try cleaning it with carb cleaner, sometimes works. If not get back to me could be 2 other things. although the car will not drive very well if it is any of the other 2.


Feb 10, 2010 | 2005 Toyota Corolla

1 Answer

Toyota corolla 2008 engine light

i think your right about the dealer, the code reader will tell the mechanic what is sending the fault, for him to change the air flow meter then the wiring is bizzare as these are 2 major seperate items and the codes would tell him that. My suggestion, take it to a local mechanic who has a code reader to tell you what the fault is, most mechanics won't charge to have a look. Toyotas are usually a pretty reliable car. Hope this helps, Good luck

Nov 20, 2009 | 2008 Toyota Corolla

1 Answer

Engine light is on, Toyota Corolla 140I, 2004


Mar 02, 2009 | 2005 Toyota Corolla

Not finding what you are looking for?
1998 Toyota Corolla Logo

1,139 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toyota Experts


Level 3 Expert

76164 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22156 Answers

Jeff Turcotte
Jeff Turcotte

Level 3 Expert

8273 Answers

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

Answer questions

Manuals & User Guides