*nigz*

Reading Nissan Fault Codes Ecu Fault Codes How Read Them

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Reading Nissan ECU Fault Codes,

now this post is going to explain to you in 15 minutes that took me days on end to work out searching through hundreds of websites and pages ripping out my hair nearly. due to my skyline running like an old morris minor running on three cylinders and using buckets of petrol just to go to the shop to get smokes damm it, and the gearbox which is an auto was doing random things it had'nt done before, so as i did'nt want to spend any money diagnosing these problems due to the amount you can spend putting these little jiggers on a dyno, So i started thinking back to my old sss pulsar days when you would just pull out a plug leading from the little black box under the passengers seat, grab a piece of wire and just bridge two of the ports and the error codes would just flash out on the check engine light on the dash! So after finding a post on the net about the skyline codes, I read you just take of the kick panel on the passenger side floor undo a few nuts and remove the Ecu and look for one or two led's and a small screw you can turn clockwise and anti clockwise to make the codes function for you now if this relates to your ECU here are a few links I found all about these types of ecu's http://forums.gtrcanada.com/showthread.php?t=13657 , http://www.nissanforums.com/truck-suv/8483...rror-codes.html .

which is not what im writing about here as my ECU is an genuine Aftermarket type which does not have the two led's or small adjusting screw so where too from here I thought then after sifting through tonnes of info i came up with the theory below which takes three minutes to diagnose and clear all faults to reset computer which = top performance!!! so read on below and see how you go with this you will be suprised and you don't even need to touch the ecu behind the passengers kick panel and best of all it's free. oh besides the paper clip haha!!

Reading Nissan Fault Codes

Nissan ECU's allow you to read any stored fault codes without any specialist equipment.

Below will show how you can read yours. The orientation of the plug may vary so please make sure you are looking at the plug the right way up before you try this on your car.

First of all you need to obtain the consult diagnostic plug location. This us usually in the same area as the fuse box. located drivers side near right knee under dashboard.

Below is a typical example of what you are looking for.

plug2.jpg

Once you have located the consult plug you then need to grab yourself a short piece of wire or a paper clip.

Please read all the following instructions in full before you attempt to carry a fault code read out.

  1. Switch the ignition to the ON position but do not start the car.
  2. Depending on its orientation of the consult plug (see below) bridge the two lower left, or upper right pins on the consult plug with the wire paper clip for 2 seconds then remove the bridge.
  3. plug2.jpg
  4. Observe and write down the sequence of flashed produced by the engine check light on the dash. using the information provided above.
  5. Once you are satisfied you have all the fault codes bridge the consult pins again and this will erase any stored fault codes and revert the ECU back its normal operation.

Understanding the fault code readout:

ECU fault codes are usually displayed on the engine check light on the dash, and are displayed by the number of flashes as well as the speed of the flashes.

For example, an ECU showing no recorded faults will display code 55. The first digit is shown as 5 followed by a pause. This then followed by the second digit. This is shown as 5 short flashes. Thus Code 55 - all clear.

Listed below are the fault codes for the skyline

11 - Crank Angle Sensor/Camshaft Position Sensor

12 - Air Flow Meter

13 - Engine Coolant Temperature Sensor

14 - Vehicle Speed Sensor

21 - Ignition Signal

22 - Fuel Pump

23 - Idle Switch

24 - Throttle Valve Switch

25 - Idle Speed Control Valve

26 - Boost Pressure Sensor

27 -

28 - Cooling Fan Circuit

29 -

30 -

31 - ECM

32 - EGR Function

33 - Heated Oxygen Sensor

34 - Knock Sensor

35 - Exhaust Gas Temperature Sensor

36 - EGR Control-Back Pressure Transducer

37 - Knock Sensor

38 - Right hand bank Closed Loop (B2)

41 - Intake Air Temperature Sensor

42 - Fuel Temperature Sensor

43 - Throttle Position Sensor

45 - Injector Leak

47 - Crankshaft Position Sensor

51 - Injector Circuit

53 - Oxygen Sensor

54 - A/T Control

55 - No Malfunction

63 - No. 6 Cylinder Misfire

64 - No. 5 Cylinder Misfire

65 - No. 4 Cylinder Misfire

66 - No. 3 Cylinder Misfire

67 - No. 2 Cylinder Misfire

68 - No. 1 Cylinder Misfire

71 - Random Misfire

72 - TWC Function right hand bank

76 - Fuel Injection System Function right hand bank

77 - Rear Heated Oxygen Sensor Circuit

82 - Crankshaft Position Sensor

84 - Automatic Transmission Diagnostic Communication Line

87 - Canister Control Solenoid Valve Circuit

91 - Front Heated Oxygen Sensor Heater Circuit right hand bank

94 - TCC Solenoid Valve

95 - Crank Position Cog

98 - Engine Coolant Temperature Sensor

101 - Front Heated Oxygen Sensor Heater Circuit right hand bank

103 - Park/Neutral Position Switch Circuit

105 - EGR and EGR Canister Control Solenoid Valve Circuit

108 - Canister Purge Control Valve Circuit

111 - Inhibitor Switch

112 - Automatic Transmission Speed Sensor

113 - Automatic Transmission 1st Signal

114 - Automatic Transmission 2nd Signal

115 - Automatic Transmission 3rd Signal

116 - Automatic Transmission 4th Signal

118 - Automatic Transmission Shift Solenoid Valve A

121 - Automatic Transmission Shift Solenoid Valve B

123 - Automatic Transmission Overrun Clutch Solenoid Valve

124 - Automatic Transmission TOR Conv Solenoid Valve

125 - Automatic Transmission Line Pressure Solenoid

126 - Automatic Transmission Throttle Position Sensor

127 - Automatic Transmission Engine Speed Signal

128 - Automatic Transmission Fluid Temperature Sensor

Important note:

Please take care if your going to carry out any such diagnostic procedure on your car and understand that this information is provided in good faith and we can accept no responsibility for any accidents, errors or inaccuracies should you decide to follow any of the information provided here. although it did work fine for me and after finding three fault codes and fixing them my skyline has never gone better. So good luck with this and just make sure you take caution when working out which ports to bridge i just faced mine upright and bridged the left hand botton two and it worked first shot.

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could you post the picture in a bigger size (including the surrounding) so I could understand which side is the top and bottom.

thanks

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could you post the picture in a bigger size (including the surrounding) so I could understand which side is the top and bottom.

thanks

sure thing :P attached are some pics for you marked out, these pics are of the plug as if you are sitting in the drivers seat looking into the fuse box!!

post-62010-1240420944_thumb.jpg

post-62010-1240420684_thumb.jpg

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very interesting! Never knew you could do that with the skylines. Majority of people just say look at the LED on the ecu but this seems much easier.

Should be in the tutorial/diy section

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checking a fault code is about a one or 2 minute procedure but its amazing the number of persons who post about engine not firing properly/missing problems who have never bothered to d/l the R34 Engine Service Manual from the internet or even to read it

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if the ecu has 2 fault codes

will it flash (for example) 4 pause 3 pause 6 pause 8?

show 2 fault codes??

or is it different?

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very interesting! Never knew you could do that with the skylines. Majority of people just say look at the LED on the ecu but this seems much easier.

Should be in the tutorial/diy section

thanks! i know it is huh!! but you know what the funniest part is yet this is so simple to do once shown yet it took me about three years to actually find out how to do this!!! on my ecu there are no actual led's, so i had to improvise to get around it, i will post this up in diy thanks for the feedback much appreciated im hoping this has helped out many!! cheers

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if the ecu has 2 fault codes

will it flash (for example) 4 pause 3 pause 6 pause 8?

show 2 fault codes??

or is it different?

yes thats right if there is 2 fault codes it will read them out one after the other example: code 23 and code 44 will read as 2 flashes pause 3 flashes pause 4 flashes pause 4 flashes them it will repeat and so on. so if you had say 9 faults it would read them all out one after the other in a row then repeat them so you really have to concentrate on it and let it read them out 3 or 4 times to be certain exactly which fault codes youj do have cheers

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checking a fault code is about a one or 2 minute procedure but its amazing the number of persons who post about engine not firing properly/missing problems who have never bothered to d/l the R34 Engine Service Manual from the internet or even to read it

good point

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or you could just spend $70 on a consult cable and plug your laptop in and do other diagnostice tests other than just reading fault codes

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What consult cable do u need? and what program do u have to run on your laptop to be able to find out codes?

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contact newkleer on this forum. he sells them. software can be downloaded, but you can also ask him about it

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checking a fault code is about a one or 2 minute procedure but its amazing the number of persons who post about engine not firing properly/missing problems who have never bothered to d/l the R34 Engine Service Manual from the internet or even to read it

*coughs* yeah, sorry about that peoples. but got the ignition error code, so i guess coilpacks are the problem just as was suggested, reset the ecu as well and wow is it happier. response is so much better, and more power, it was very nice. however, having the ignition on "on" without the engine running for 5 mins resulted in my bro and i trying to bump start it up a hill for half an hour hahaha

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Will this work for older model RB20 like the one in my 89 Cefiro with factory RB20det as my consult plug (well what I think is the consult plug) looks nothing like that one^^

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sorry to bring up an old thread but i just got an a/t control error code (but my car is manual) and also knock sensor error? Does that mean my sensor is rooted or can i some how assess it without replacing it? I hear they are under the intake plenum and a mongrel to get to!

Also y would i get the at control code error if my car is manual, how do i fix it? Or get rid of the error code

Edited by THRLLR

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i got error code 21 how can i fix that?????

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i got error code 21 how can i fix that?????

I had that when my coilpacks were going. Performancewise has yellow jackets for cheap, theyve been pretty popular for a while now

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how much are they for???

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depends on the model, up to $420 delivered I think. Look through the misfire sticky if you want to try some other bandaid solutions first. Also, is it misfiring much? At higher rpm? Or just displaying the code?

Does the way the car runs change when the code error comes up?

Edited by Galois

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