PLX Stopped communicating

K-Series Programmable ECU installation questions / support issues
94vt3c
Posts: 17
Joined: Fri Feb 07, 2020 12:08 pm

Re: PLX Stopped communicating

Post by 94vt3c »

Sorry digital connection looks wrong in the first photo. Here is a better look with it disconnected. Again shotty wiring is temp.
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1994 CIVIC EG COUPE(EJ1)
K20A2 Boosted E85
Kpro4 PLX Wideband

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Spunkster
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Re: PLX Stopped communicating

Post by Spunkster »

What has changed in the car since the last time it worked. Is the ethanol content new?

94vt3c
Posts: 17
Joined: Fri Feb 07, 2020 12:08 pm

Re: PLX Stopped communicating

Post by 94vt3c »

Nothing changed. Just battery was low voltage and it struggled to start. Started on the 2nd try and boom no sensor detected. Ethanol content has been setup for a long time
1994 CIVIC EG COUPE(EJ1)
K20A2 Boosted E85
Kpro4 PLX Wideband

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Spunkster
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Re: PLX Stopped communicating

Post by Spunkster »

Have you tried reuploading your calibration to the ECU?

94vt3c
Posts: 17
Joined: Fri Feb 07, 2020 12:08 pm

Re: PLX Stopped communicating

Post by 94vt3c »

Yes. Tried a few known good calibrations
1994 CIVIC EG COUPE(EJ1)
K20A2 Boosted E85
Kpro4 PLX Wideband

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Spunkster
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Posts: 18918
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Re: PLX Stopped communicating

Post by Spunkster »

Do you know anyone else with a K-Pro?

94vt3c
Posts: 17
Joined: Fri Feb 07, 2020 12:08 pm

Re: PLX Stopped communicating

Post by 94vt3c »

Unfortunately no..
1994 CIVIC EG COUPE(EJ1)
K20A2 Boosted E85
Kpro4 PLX Wideband

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Spunkster
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Re: PLX Stopped communicating

Post by Spunkster »

Was any other work done on the vehicle since the last time it was working correctly...even if it was an oil change, tire change...anything.

94vt3c
Posts: 17
Joined: Fri Feb 07, 2020 12:08 pm

Re: PLX Stopped communicating

Post by 94vt3c »

Absolutely nothing. Parked it working fine. Sat for a few days then my current predicament happened.
1994 CIVIC EG COUPE(EJ1)
K20A2 Boosted E85
Kpro4 PLX Wideband

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Spunkster
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Posts: 18918
Joined: Fri Sep 20, 2002 5:06 pm
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Re: PLX Stopped communicating

Post by Spunkster »

If you unplug the ethanol contend input does it read the wideband?

94vt3c
Posts: 17
Joined: Fri Feb 07, 2020 12:08 pm

Re: PLX Stopped communicating

Post by 94vt3c »

I will check it when I get home from work. Question though why would that affect it? Flex sensor has been installed since I got the kpro and is functioning properly.
1994 CIVIC EG COUPE(EJ1)
K20A2 Boosted E85
Kpro4 PLX Wideband

User avatar
Spunkster
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Posts: 18918
Joined: Fri Sep 20, 2002 5:06 pm
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Re: PLX Stopped communicating

Post by Spunkster »

I'm just checking other things here.

94vt3c
Posts: 17
Joined: Fri Feb 07, 2020 12:08 pm

Re: PLX Stopped communicating

Post by 94vt3c »

Same result. No sensor detected on digi input.
1994 CIVIC EG COUPE(EJ1)
K20A2 Boosted E85
Kpro4 PLX Wideband

94vt3c
Posts: 17
Joined: Fri Feb 07, 2020 12:08 pm

Re: PLX Stopped communicating

Post by 94vt3c »

Any other ideas to troubleshoot? I'm stumped here..
1994 CIVIC EG COUPE(EJ1)
K20A2 Boosted E85
Kpro4 PLX Wideband

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Spunkster
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Posts: 18918
Joined: Fri Sep 20, 2002 5:06 pm
Location: Hondata
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Re: PLX Stopped communicating

Post by Spunkster »

The only thing left would be for you to send the PLX and your ECU to us for testing here.

Send an email to support <at> hondata.com with the following and I will issue an RMA and give you further
instructions:

Name:
Address:
Phone:
Email:
Serial#:
Description of problem:

Include a link to this thread

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