Code 51 Trac Obd1 Help!

[KEMMER]

So I bought a 1992 ls400 with 257,00 k's and I had four codes, cel codes 71 and 28 and trac codes 24 and 51. I've fixed 71 and 24, tomorrow i'll change o2 sensor and that should get rid of 28 but this 51 code which means (Problem in engine control system) this one I have found no help for. I really want to get that engine light turned off. If anyone has experienced this code and knows of some help they can throw my way I would appreciate it. :D

[curiousB]

So I bought a 1992 ls400 with 257,00 k's and I had four codes, cel codes 71 and 28 and trac codes 24 and 51. I've fixed 71 and 24, tomorrow i'll change o2 sensor and that should get rid of 28 but this 51 code which means (Problem in engine control system) this one I have found no help for. I really want to get that engine light turned off. If anyone has experienced this code and knows of some help they can throw my way I would appreciate it. :D

......" code 51 (problem in Engine Control System - which I think is the EGR gas temp. sensor circuit)."....

[KEMMER]

:D

So I bought a 1992 ls400 with 257,00 k's and I had four codes, cel codes 71 and 28 and trac codes 24 and 51. I've fixed 71 and 24, tomorrow i'll change o2 sensor and that should get rid of 28 but this 51 code which means (Problem in engine control system) this one I have found no help for. I really want to get that engine light turned off. If anyone has experienced this code and knows of some help they can throw my way I would appreciate it. :D

......" code 51 (problem in Engine Control System - which I think is the EGR gas temp. sensor circuit)."....

R U saying that the circuit is different than the sensor. If so, how would I go about checking the circuit? I cleaned the sensor yesterday when I cleaned the egr valve. If the circuit is different than the sensor would that mean I have an electrical problem? If so would it originate with ecu or ecm?

Thanks, I haven't been able to find out much on this code, so your help is appreciated. :D :D :D

[Quack11]

So I bought a 1992 ls400 with 257,00 k's and I had four codes, cel codes 71 and 28 and trac codes 24 and 51. I've fixed 71 and 24, tomorrow i'll change o2 sensor and that should get rid of 28 but this 51 code which means (Problem in engine control system) this one I have found no help for. I really want to get that engine light turned off. If anyone has experienced this code and knows of some help they can throw my way I would appreciate it. :D

See if this information will provide any help.

g___tests_with_codes.pdf

[KEMMER]

So I bought a 1992 ls400 with 257,00 k's and I had four codes, cel codes 71 and 28 and trac codes 24 and 51. I've fixed 71 and 24, tomorrow i'll change o2 sensor and that should get rid of 28 but this 51 code which means (Problem in engine control system) this one I have found no help for. I really want to get that engine light turned off. If anyone has experienced this code and knows of some help they can throw my way I would appreciate it. :D

See if this information will provide any help.

That is a really useful guide for cel but my problem lies with the trac light being on for this code. If you have the troubleshooting pdf for trac light I would greatly appreciate it. Thanks for your help, I will use that info for my code 28 for cel light. ;)

[steve2006]

Hi,

Trac codes are as follows,

24 - Open or short in sub-throttle actuator circuit

51 - Problem in engine control system

[KEMMER]

Well This morning I went to get an emissions test done and to my amazement on the way there I looked at my dash and the trac off an cel lights were off. So I went to my emissions test and the lights came back on. But I'm happy to report that I passed my emissions test with flying colours. I`m now trying to figure out why those lights were off this morning and I think It has something to do with the fact that I cleaned my EGR valve thouroughly. So now I am going to change my O2 sensor and If that doesn`t clear it up, I`ll change the EGR sensor. I just figure that the trac light must correlate with the CEL cuz they were both off together and then came on together. So I`m hopeful it has something to do with the O2 sensor cuz the code for the CEL was 28.

If anyone has had a code 51 for their trac light, I would love to hear about it.

[Quack11]

Well This morning I went to get an emissions test done and to my amazement on the way there I looked at my dash and the trac off an cel lights were off. So I went to my emissions test and the lights came back on. But I'm happy to report that I passed my emissions test with flying colours. I`m now trying to figure out why those lights were off this morning and I think It has something to do with the fact that I cleaned my EGR valve thouroughly. So now I am going to change my O2 sensor and If that doesn`t clear it up, I`ll change the EGR sensor. I just figure that the trac light must correlate with the CEL cuz they were both off together and then came on together. So I`m hopeful it has something to do with the O2 sensor cuz the code for the CEL was 28.

If anyone has had a code 51 for their trac light, I would love to hear about it.

Let us know if this helps in anyway.

traction_contrl_system.pdf

[KEMMER]

Well This morning I went to get an emissions test done and to my amazement on the way there I looked at my dash and the trac off an cel lights were off. So I went to my emissions test and the lights came back on. But I'm happy to report that I passed my emissions test with flying colours. I`m now trying to figure out why those lights were off this morning and I think It has something to do with the fact that I cleaned my EGR valve thouroughly. So now I am going to change my O2 sensor and If that doesn`t clear it up, I`ll change the EGR sensor. I just figure that the trac light must correlate with the CEL cuz they were both off together and then came on together. So I`m hopeful it has something to do with the O2 sensor cuz the code for the CEL was 28.

If anyone has had a code 51 for their trac light, I would love to hear about it.

Let us know if this helps in anyway.

Thankyou so much for the pdf's. When I get my O2 sensor fixed, I will let you know if it relates to the trac code. The manual says if I have a 51 code, then I should fix all cel codes first. I know that I have a 28 code for cel, and am quite sure that this is the issue. Unfortunately, I went to get a safety test and I have to replace tie rod ends and rear pads and rotors and the shoes for the e-brake. When that's done I have to have an alignment done. roughly 700 bucks here at the shop to get it done. I'm going to tackle it myself though. The parts are only 150, cuz the car came with pads and rotors when I bought it last week. So I'm broke right now and the sensor is gonna have to wait. Thanks again for the help and I will let you know what happens.