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Old 01-12-2018, 08:53 AM
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Default P1590

Hi all,


Had a code P1590- "rough road-implausible reading" came up on the screen. I cannot find that number in any of my lists. Anyone ran into this one before?


Thanks,
rmcc
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Old 01-12-2018, 09:15 AM
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Quote:
Originally Posted by rmcc View Post
Hi all,


Had a code P1590- "rough road-implausible reading" came up on the screen. I cannot find that number in any of my lists. Anyone ran into this one before?


Thanks,
rmcc
Itís related to the ABS system, and is a general fault. Youíll have to scan the ABS system to see if there is an ABS fault that triggered it.
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Old 01-12-2018, 09:33 AM
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Mine throws that code constantly, but it doesn't trigger the CEL.
In case you can't read ABS codes, my ABS system gives me a shuttle valve error and a wheel sensor error. I never get the three amigos but I expect they will show up sometime unless I clean/replace the wheel sensor and do Option B.
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Old 01-12-2018, 11:09 AM
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As mentioned above P1590 is a generic fault code. You really need a scanner that can read the actual ABS faults. Once you do that it’ll be much easier to diagnose.
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Old 01-12-2018, 05:25 PM
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Use this site to look up that code

http://enginecodemaster.com
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Old 01-12-2018, 05:28 PM
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I typically get that code when Tricky Dick has caught a little air.

I just reset it and it is fine till next time I try to channel my inner Evel Knievel
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Old 01-12-2018, 06:01 PM
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From the RAVE:

Land Rover Description
P1590 ABS rough road signal circuit malfunction Hardware is OK, but SLABS ECU is sending an error signal
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Old 01-12-2018, 07:36 PM
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Quote:
Originally Posted by Friday Night Disco View Post
I typically get that code when Tricky Dick has caught a little air.

I just reset it and it is fine till next time I try to channel my inner Evel Knievel
Mine reappears immediately after resetting, even without driving anywhere. I believe it's related to the input from one of the sensors because the behaviour doesn't change when I change the SLABS unit.
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Old 01-12-2018, 07:43 PM
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Originally Posted by mollusc View Post
Mine reappears immediately after resetting, even without driving anywhere. I believe it's related to the input from one of the sensors because the behaviour doesn't change when I change the SLABS unit.
Unplug all sensors, clean, and reconnect
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Old 01-12-2018, 08:20 PM
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Quote:
Originally Posted by Friday Night Disco View Post
Unplug all sensors, clean, and reconnect
That's my eventual plan.
I was trying to add possibly useful info for the original poster.
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