Question about 2003 Toyota ECHO

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Computer won't communicate

Inspection machine will not communicate with my car's computer. Took it to the shop.No bad codes, no lights on and no problems. Computer reset. Back to inspections twice today. Will not communicate and no one can figure out why.

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  • Expert
  • 59 Answers

Check ALL fuzes

Posted on Nov 26, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 1861 Answers

SOURCE: 2001 Toyota Corolla computer code

P-0171 indicates an issue with the Mass AirFlow Sensor. It is probably dirty. Locate this device on the intake tube, between the Air filter and the intake manifold. Remove the wire connector. Remove the 2 phillips screws that holds it onto the air tube. Using a flashlight, examine the interior of the sensor. You will see 2 small wires. If they look "fuzzy", or if there is any debris on them, this is your problem. Using brake cleaner spray (get it at a parts store), spray the interio until the wires are super clean. Do NOT use compressed air to clean it, the air pressure will break the wires, rendering the sensor useless. Refit the sensor, and drive it for a while, the light will eventiually go out when the ECM relearns the signal from the now-clean sesnor. Hope this helps, and thanks for using FixYa. Let me know what you find inside the sensor.

Posted on Nov 29, 2008

  • 65 Answers

SOURCE: Code P0401 1998 Toyota Camry

I'm assuming that it is a four cyl.The p0401 code is for insufficient egr flow.Most of the time it is the egr vsv valve (vsv means vacuum switching valve)which is what controls the vacuum to the egr valve to open it.It is kind of hard to get to as it is on the block under the head on the back side.If you follow the hose from the egr valve it goes to the vsv.I have also seen mice eat holes in the vacuum line which would also give you problems.I hope this help and let me know if you have anymore questions

Posted on Dec 03, 2008

  • 26 Answers

SOURCE: code P0330

P0330 Knock Sensor 2 Circuit Malfunction (Bank 2)
Check the resistance of the knock sensor (compare it to factory specs)
The knock sensor is faulty and needs to be replaced.
Check for broken/frayed wires leading to the sensor.
There is a wiring short/fault in the knock sensor circuit
Check timing

Posted on Dec 16, 2008

gessneruk
  • 22 Answers

SOURCE: I have a problem with my 2001 Toyota sienna, took

If the "evap not ready" readiness monitor never clears and you keep getting P0440,P0441,P0446 type codes, then you have a problem with the evap system. You have already tried the gas cap (good start) but there are about 6 other things it can be from electrical VSV air valves (there are 3 of them, 2 under the hood, 1 near the charcoal cannister (behind fuel tank) to 2 air operated valves on the front of the same cannister. There is also an air line that goes to one of the electric VSV valves on the air cleaner under the hood. Several oil change places have been guilty of pullling these off and not reconnecting them.
We have a page with pictures of our experience,

http://www.findonefindall.com/toyota-sienna/toyota_sienna_evap_P0446.htm

Posted on Aug 28, 2009

  • 215 Answers

SOURCE: had the rack and pinion

while replacing a rack on any car with a airbag made into the steering column you have to make sure the steering wheel does not move while changing out the rack.......if it moves buy itself or lets just say someone was to move it for a joke and it gets out of position and after you put everything back together and turn the steering all the way the wires in the spiral cable will stretch and break...i have seen this happen all the time when you are working on the steering system....the spiral cable will turn 2.5 turns in each direction when you are installing a new one and if it is installed .5 to 1 turn out then when you drive the car and turn the wheel lock to lock the wires are going to stretch and break.....i would have to say that whoever installed the rack has caused all of your other problems and if it was the company i work for they would take care of it for you...i hope that this info was helpful and if i can help you in any other way let me know and if you would also let me and fixya know if i was of any help to you and a comment and a comment would be appreciated...thanks and good luck...have a blessed day......

Posted on Aug 16, 2011

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2 Answers

Why won 't computer communicate with code checker


Check the cigarette lighter fuse. This is what powers the DLC. If the fuse is good, check and see if the lighter works. If not, you have a bad wire. Code readers have to have power from the car. Most scanners have there own power and will read the computer, unless the data wire is bad or the computer is bad.

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Disconnect the battery for 30 minutes. You will have to reset the radio/clock afterwards though.

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2003 Toyota Echo will not communicate with inspection machine


I know why. Toyota issued a technical service bulletin (TSB) dated September 8, 2003 applicable to all models, including yours. The bulletin specifies removal of the original DLC3 (OBDII connector cable) and installation of a controller area network (CAN) interface module. You may have to take your ECHO to a Toyota dealer to accomplish this.

Mar 21, 2014 | 2003 Toyota ECHO

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Abs warning light on


Just like your engine computer stores codes and turns on your check engine light, your ABS computer stores codes and turns on your ABS light. You can retrieve these codes with a scan tool, but it has to be one that can communicate with your ABS computer. The less expensive scan tools just will not do this, I would suggest taking it in to a shop and having the codes read, then you can decide if you want to fix the problem yourself or have a shop do the repairs. Chances are good that it would just be a wheel speed sensor gone bad, but you just don't know or know which one without having the computer scanned.

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Reset computer 2004 impala


Clear Codes & Remove the dash check light ?

Codes Reader or Professional Scan Tool

If you disconnect the battery you may loose
things you need & really cause problems

I suggest you get the car repaired & then the light
will go away or be cleared at the repair shop when they
no longer need the stored data

You clear it, they can not diagnose the issues

If fault isn't repaired the light comes on until it is
& you won't be allowed to go thru inspection either

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Obd not working 2006 chevrolet malibu maxx unable to have car inspected


OBD2 works for getting codes causing check engine light.
Cannot communicate to NYS DMV to receive inspection.
It will pass inspection. No check engine lights or codes. Problem is communication with inspection machine.

I still do not know the answer to the problem.

Jun 23, 2012 | 2006 Chevrolet Malibu Maxx

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OBDII COMMUNICATION FAILURE


If your engine light is coming on, then there is a code somewhere in the computer,it may be a pending code.Its possible your computer is bad. Have your computer tested.

Apr 09, 2010 | 2003 Saturn VUE

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I have a 2001 Santa Fe and the Engine light is lit and has been for many years. When I took the vehicle for the State Inspection I was told that the Co2 needed to be changed so the light would come off and...


The best thing to do is go to Auto Zone and get your Hyundai scanned for a DTC code. That would tell us which O2 sensor has gone bad. You have three O2 sensors and one of them has gone bad, the O2 sensor sends signals to the ecm to control the air fuel mixture so it will not run to rich or to lean which is causing you to fail the state inspection. Good luck and keep me posted on what the DTC codes are, be glad to help.

Jun 25, 2009 | 2001 Hyundai Santa Fe

1 Answer

Emmision test failed?


maybe i can help, the car has to be in a obd rhope this helpseadiness mode,thecar is probably not in this mode because it has not been driven enough or the(right way). you have do do a drive cycle to get the computer to go into obd readiness mode. also check pin #16 on obd connector tomake sure it has power. go to obd website for complete instructions on the DRIVE CYCLE it is rather long,

Apr 08, 2009 | 2000 Hyundai Elantra

1 Answer

Check Engine light.


Sounds like a bad computer. You may want to have a auto repair shop plug that in and see what they get for codes. If it still won't comunicate then it will need a computer first. That car may have obd1 communications and the parts store obd2 reader won't read it " Link error" see where I'm going with this? That year vehicle could go either way with the communications. Let me know if you need more info and I will try to help you futher. Thanks Dan

Jun 09, 2008 | 1995 Buick LeSabre

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