Transmission Pressure Control Solenoid

►  What is a Pressure Control Solenoid?
►  What Exactly Does a Pressure control Solenoid do?
►  Symptoms of a Failed Pressure Control Solenoid
►  Pressure Control Solenoid Replacement and Cost

Transmission Pressure Control Solenoid: DESCRIPTION

The transmission pressure control solenoid controls the fluid pressure to the internal friction plate clutches or drum bands.  A bad or failing transmission pressure control solenoid can cause slipping, which can result in the transmission overheating.  If left unrepaired, the slipping will ruin (burn or fry) the friction clutches and bands causing transmission failure.

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Symptoms of a Faulty Transmission Pressure Control Solenoid

A problem with the transmission pressure control solenoid can cause the check engine light to illuminate with little to no other symptoms.  On the other hand, it can cause transmission slipping in one or all gears.  The failure of this solenoid can also cause the transmission not to shift to the next gear or any gear, which means the vehicle will not move when the transmission is put into gear.

Transmission Pressure Control Solenoid: REPAIR INFORMATION

When the diagnoses is a failed transmission pressure control solenoid, the solenoid must be replaced.  Replacing a transmission pressure conrol solenoid can be done by most any auto repair shop, automobile dealership service center or you can do-it-yourself "DIY".

Transmission Pressure Control Solenoid: REPLACEMENT COST

The cost to replace a failed transmission pressure control solenoid varies by vehicle make, model and year.  The other factors that influence cost include; who does the work, e.g. auto repair shop, car dealership or you do-it-yourself.  If you do-it-yourself, where you purchase the replacement solenoid will also influence the cost.

Below are transmission pressure control solenoid replacement costs for four different vehicles.  Use this information to give you a rough idea of what your cost might be.

Fail Safe (or Limp Mode)

A failed transmission solenoid or an open circuit anywhere in the electrical system may cause the transmission to go into Fail Safe (or "limp" mode as it is also called) in order to protect the transmission from internal damage that might be caused by the faulty solenoid or open circuit.  In fail safe/limp mode, the transmission will have limited functionality and will lock in either 2nd. or 3rd. gear.  When the transmission is in fail safe mode, the vehicle should only be drive home or to the repair shop.  Maximum speed while in limp mode is around 30 mph.

Continuing to drive the vehicle with the transmission in fail safe or driving faster than the recommended fail safe speed will cause the transmission to overheat.  Excessive heat build up in an automatic transmission is the #1 cause of catastrophic failure.  So, avoid extended driving when the transmission is in fail safe mode.

A transmission that goes into limp mode will sometimes reset itself when the engine is shut off and restarted.  So, if you find yourself in this predicament, find a safe place to pull off the road and shut the engine off, wait a minute or so and then restart it. 

Diagnostic Trouble Codes P0700 thru P0799

P0700....Transmission Control System (MIL Request)
P0701....Transmission Control System Range/Performance
P0702....Transmission Control System Electrical
P0703....Torque Converter/Brake Switch B Circuit
P0704....Clutch Switch In put Circuit Malfunction
P0705....Transmission Range Sensor Circuit Malfunction (PRNDL Input)
P0706....Transmission Range Sensor Circuit Range/Performance P0707....Transmission Range Sensor Circuit Low Input
P0708....Transmission Range Sensor Circuit High Input
P0709....Transmission Range Sensor Circuit intermittent
P0710....Transmission Fluid Temperature Sensor Circuit
P0711....Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712....Transmission Fluid Temperature Sensor Circuit Low Input P0713....Transmission Fluid Temperature Sensor Circuit High Input P0714....Transmission Fluid Temperature Sensor Circuit Intermittent P0715....Input/Turbine Speed Sensor Circuit
P0716....Input/Turbine Speed Sensor Circuit Range/Performance P0717....Input/Turbine Speed Sensor Circuit No Signal
P0718....Input/Turbine Speed Sensor Circuit Intermittent
P0719....Torque Converter/Brake Switch B Circuit Low
P0720....Output Speed Sensor Circuit
P0721....Output Speed Sensor Circuit Range/Performance
P0722....Output Speed Sensor Circuit No Signal
P0723....Output Speed Sensor Circuit Intermittent
P0724....Torque Converter/Brake Switch B Circuit High
P0725....Engine Speed Input Circuit
P0726....Engine Speed Input Circuit Range/Performance
P0727....Engine Speed Input Circuit No Signal
P0728....Engine Speed Input Circuit Intermittent
P0730....Incorrect Gear Ratio
P0731....Gear 1 Incorrect Ratio
P0732....Gear 2 Incorrect Ratio
P0733....Gear 3 Incorrect Ratio
P0734....Gear 4 Incorrect Ratio
P0735....Gear 5 Incorrect Ratio
P0736....Reverse Incorrect Ratio
P0737....TCM Engine Speed Output Circuit
P0739....TCM Engine Speed Output Circuit Low
P0739....TCM Engine Speed Output Circuit High
P0740....Torque Converter Clutch Circuit
P0741....Torque Converter Clutch Circuit Performance or Stuck Off
P0742....Torque Converter Clutch Circuit Stuck On
P0743....Torque Converter Clutch Circuit Electrical
P0744....Torque Converter Clutch Circuit Intermittent
P0745....Pressure Control Solenoid 'A'
P0746....Pressure Control Solenoid 'A' Performance or Stuck Off
P0747....Pressure Control Solenoid 'A' Stuck On
P0748....Pressure Control Solenoid 'A' Electrical
P0749....Pressure Control Solenoid 'A' Intermittent
P0750....Shift Solenoid 'A'
P0751....Shift Solenoid 'A' Performance or Stuck Off
P0752....Shift Solenoid 'A' Stuck On
P0753....Shift Solenoid 'A' Electrical
P0754....Shift Solenoid 'A' Intermittent
P0765....Shift Solenoid 'B'
P0756....Shift Solenoid 'B' Performance or Stuck Off
P0757....Shift Solenoid 'B' Stuck On
P0758....Shift Solenoid 'B' Electrical
P0759....Shift Solenoid 'B' Intermittent
P0760....Shift Solenoid 'C'
P0761....Shift Solenoid 'C' Performance or Stuck Off
P0762....Shift Solenoid 'C' Stuck On
P0763....Shift Solenoid 'C' Electrical
P0764....Shift Solenoid 'C' Intermittent
P0765....Shift Solenoid 'C'
P0766....Shift Solenoid 'D' Performance or Stuck Off
P0767....Shift Solenoid 'D' Stuck On
P0768....Shift Solenoid 'D' Electrical
P0769....Shift Solenoid 'D' Intermittent
P0770....Shift Solenoid 'E'
P0771....Shift Solenoid 'E' Performance or Stuck Off
P0772....Shift Solenoid 'E' Stuck On
P0773....Shift Solenoid 'E' Electrical
P0774....Shift Solenoid 'E' Intermittent
P0775....Pressure Control Solenoid 'B'
P0776....Pressure Control Solenoid 'B' Performance or Stuck Off
P0777....Pressure Control Solenoid 'B' Stuck On
P0778....Pressure Control Solenoid 'B' Electrical
P0779....Pressure Control Solenoid 'B' Intermittent
P0780....Shift
P0781....1-2 Shift
P0782....2-3 Shift
P0783....3-4 Shift
P0784....4-5 Shift
P0785....Shift/Timing Solenoid
P0786....Shift/Timing Solenoid Range/Performance
P0787....Shift/Timing Solenoid Low
P0788....Shift/Timing Solenoid High
P0789....Shift/Timing Solenoid Intermittent
P0790....Normal/Performance Switch Circuit
P0791....Intermediate Shaft Speed Sensor Circuit
P0792....Intermediate Shaft Speed Sensor Circuit Range/Performance
P0793....Intermediate Shaft Speed Sensor Circuit No Signal
P0794....Intermediate Shaft Speed Sensor Circuit Intermittent
P0795....Pressure Control Solenoid 'C'
P0796....Pressure Control Solenoid 'C' Performance or Stuck off
P0797....Pressure Control Solenoid 'C' Stuck On
P0798....Pressure Control Solenoid 'C' Electrical
P0799....Pressure Control Solenoid 'C' Intermittent

Diagnosing a Failed Transmission Pressure Control Solenoid with Check Engine Light

A failed transmission solenoid will normally set a diagnostic trouble code (DTC), which will cause the check engine light to illuminate.  In these instances, an OBD-II scan of your vehicle's computer will provide information pointing to the faulty solenoid.  The DTC information (or explanation) will almost always include a statement indicating that the problem may be an open circuit in the transmission electrical system.  Therefore, you should always test the solenoid to verify its condition before replacing it. DTC codes specific to transmissions and solenoids are listed below.

Diagnosing any Transmission Problem with NO Check Engine Light

A correct diagnoses of a transmission problem when there is no check engine light is best accomplished with a professional transmission scan.  This type of scan will necessitate a visit to a transmission shop or car dealership.  A professional transmission scan can cost between $60 and $125.  This charge is normally referred to as a diagnostics fee.  It is standard procedure for the shop making the repair to waive the diagnostics fee. 

NOTE: To say that the lockup torque converter LOCKS the engine and transmission together isn't completely accurate because slipping can still occur if the vehicle has a heavy enough load.  A transmission that slips while in lockup because the system is overloaded will generate tremendous heat.  These situations normally end with complete transmission failure.

 Transmission Pressure Control Solenoid (PCS) - Sample Replacement Cost

VEHICLE: 2004 TOYOTA SIENNA
REPAIR: Replace failed PCS
REPAIR SHOP COST: $260
TOYOTA DEALERSHIP COST: $335
DIY COST: $40 to $65
DIY SAVINGS: $195 to $295

VEHICLE: 2000 FORD FOCUS
REPAIR: Replace failed PCS
REPAIR SHOP COST: $220
FORD DEALERSHIP COST: $300
DIY COST: $35 to $95
DIY SAVINGS: $125 to $265

VEHICLE: 2008 BMW 330i
REPAIR: Replace failed PCS
REPAIR SHOP COST: $435
BMW DEALERSHIP COST: $550
DIY COST: $75 to $135
DIY SAVINGS: $300 to $475

VEHICLE: 2003 CHEVROLET SUBURBAN
REPAIR: Replace failed PCS
REPAIR SHOP COST: $175
CHEVROLET DEALERSHIP COST: $235
DIY COST: $20 to $40
DIY SAVINGS: $135 to $180 
 

DIY costs assume transmission fluid is reused. Replacing the fluid with new ATF increases the cost.  ATF costs between $5 and $10 per quart. You will need between 3 and 5 quart

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