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P2738 Code - Transmission Control Solenoid Valve 6 Control Circuit Low Voltage

- Code Popularity: 7,237 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC P2738?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Low transmission fluid level
  • Dirty transmission fluid
  • Faulty Transmission Control Solenoid Valve
  • Transmission Control Solenoid Valve harness is open or shorted
  • Transmission Control Solenoid Valve circuit poor electrical connection
  • Faulty Transmission Control Module (TCM)
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How to Fix the DTC P2738?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P2738 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

Code P2738 Description

The Transmission Control Solenoid Valve Solenoid Valve is an electronic pressure regulator that controls transmission line pressure based on current flow through its coil windings. As current flow is increased, the magnetic field produced by the coil moves the solenoid’s plunger further away from the exhaust port. Opening the exhaust port decreases the output fluid pressure regulated by the Transmission Control Solenoid Valve, which ultimately decreases line pressure. The line pressure solenoid valve regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the Transmission Control Module (TCM). The Diagnostic Trouble Code (DTC) is set when the Transmission Control Solenoid Valve Control Circuit commanded state does not match the actual state for greater than 1 s.

OBDII Code P2738 - Transmission Control Solenoid Valve 6 Control Circuit Low Voltage - AutoCodes.com
P2738 Code - Transmission Control Solenoid Valve 6 Control Circuit Low Voltage

Need More Information on the Code?

Need more information on how to fix the P2738 code? Get Access to Factory Service Manuals

Information for Specific Makes

  • P2738 Buick Transmission Control Solenoid Valve 6 Control Circuit Low Voltage  📷
  • P2738 Cadillac Transmission Control Solenoid Valve 6 Control Circuit Low Voltage  📷
  • P2738 Chevrolet Transmission Control Solenoid Valve 6 Control Circuit Low Voltage  📷
  • P2738 Dodge Pressure Control Solenoid 'F' Control Circuit Low
  • P2738 GMC Transmission Control Solenoid Valve 6 Control Circuit Low Voltage  📷

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Code P2738 comments

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