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What does this combination of cel codes point to?


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1999 LS400 with air suspension

Codes: P0171, P0715, P0710

Sometimes the cel goes off for a few days but it's been on lately for a while.

I know each of these codes alone could have many causes, but maybe someone sees a common source here?

Thanks

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18 minutes ago, helmetless_stig said:

1999 LS400 with air suspension

Codes: P0171, P0715, P0710

Sometimes the cel goes off for a few days but it's been on lately for a while.

I know each of these codes alone could have many causes, but maybe someone sees a common source here?

Thanks

What are the names of these codes?

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1 hour ago, helmetless_stig said:

P0171: System too lean Bank 1

P0715: Input/Turbine Shaft speed sensor A circuit

P0710: Transmission fluid temperature sensor A circuit

I am sure some people here can help you better. But I will suggest to change transmission fluid & filter.

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On 1/23/2020 at 9:19 PM, helmetless_stig said:

1999 LS400 with air suspension

Codes: P0171, P0715, P0710

Sometimes the cel goes off for a few days but it's been on lately for a while.

I know each of these codes alone could have many causes, but maybe someone sees a common source here?

Thanks

The most immediate code is the P0710 nd this is what I found on that issue.

https://www.clublexus.com/forums/ls-1st-and-2nd-gen-1990-2000/855609-1998-2000-ls400-transmission-temperature-sensor.html

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