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2000 s80 check engine lighgt on

Everything on the Volvo S80. Sometimes called an "executive car", the S80 was Volvo's top-of-the-line passenger car. P2 platform.
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185cliftonst
Posts: 5
Joined: 17 March 2021
Year and Model: 2000 s80
Location: Rochester

2000 s80 check engine lighgt on

Post by 185cliftonst »

have p1618 faujt in lead between aw 50-52 and motronic 4.3 (MIL Resquested) andp0751 shift solenoid a performance or stuck off which is giving me a check engine light,Would like to make repairs myself but have no idea where tp start.Help please !!!!
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185cliftonst
Posts: 5
Joined: 17 March 2021
Year and Model: 2000 s80
Location: Rochester

Post by 185cliftonst »

got no response
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185cliftonst
Posts: 5
Joined: 17 March 2021
Year and Model: 2000 s80
Location: Rochester

Post by 185cliftonst »

waiting for response from yesterday,s question
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matthew1
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Post by matthew1 »

How many miles? How has the transmission been operating? How is the fluid color and smell? Any transmission repair/replace history?

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185cliftonst
Posts: 5
Joined: 17 March 2021
Year and Model: 2000 s80
Location: Rochester

Post by 185cliftonst »

have 234,000 mi ,no trans.,odor ,fluid looks good,trans . shifting not as it show
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RickHaleParker
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Post by RickHaleParker »

TCM-000B ( P0751 ) Shift solenoid S1. Hydraulic fault

Possible source
  • Glycol in the transmission fluid.
    The hydraulic valve for solenoid S1 has stuck in the open or closed position
    Defective control system (the solenoid binds or is stuck)
    Internal leakage in the transmission
    Warn or damaged clutch driven plates in the transmission.
Until the TCM-000B is cleared the converter will not go into lockup mode and only shift positions 3 and R are available. You are running in 3rd gear that is why the RPMs are high.
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1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package.
2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000.
2004 S60R, B8444S TF80 AWD. Yamaha V8 conversion
2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0.
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SuperHerman
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Post by SuperHerman »

My thoughts going off what RickHaleParker states:

Glycol contamination - check both fluids tranny and coolant. Have an engine coolant pressure test. If the system is compromised this should confirm. Some shops rent pressure check tools.

Solenoid and internal leakage in transmission - this sounds most likely a valve body issue. At your miles it would not be a surprise, but I am uncertain what transmission you have in your car. Also what scanner are you using?

As your fluid is visibly looking good I would discount worn clutch plates - a history of black fluid is what one would expect.
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