Pressure Control Solenoid "F" Control Circuit/Open
P2736 indicates the PCM cannot properly control Solenoid F in the transmission, likely due to an open circuit, poor electrical connection, or solenoid failure. This causes the transmission to enter limp mode and shift improperly to protect itself from damage.
What You Might Notice
- Check Engine Light illuminated
- Transmission slips during shifts
- Hard or harsh shifting (banging into gear)
- Increased fuel consumption
- Transmission overheating
Most Common Causes
- 1
Solenoid F Wiring Open or Corroded
Broken, disconnected, or severely corroded wiring to Solenoid F prevents the PCM from sending control signals. This is the most common electrical cause of this code.
- 2
Solenoid F Failure
The solenoid itself may be stuck, burned out, or internally damaged, preventing proper oil pressure modulation in the transmission.
- 3
Transmission Control Module Connector Issue
Loose, corroded, or damaged connectors at the PCM or transmission control module can break the circuit to Solenoid F.
- 4
Low or Contaminated Transmission Fluid
Insufficient or dirty transmission fluid can cause solenoid operation problems and trigger this code as a secondary symptom.
How to Diagnose It
- 1
Check Solenoid F Wiring Open or Corroded — Broken, disconnected, or severely corroded wiring to Solenoid F prevents the PCM from sending control signals. This is the most common electrical cause of this code.
- 2
Check Solenoid F Failure — The solenoid itself may be stuck, burned out, or internally damaged, preventing proper oil pressure modulation in the transmission.
- 3
Check Transmission Control Module Connector Issue — Loose, corroded, or damaged connectors at the PCM or transmission control module can break the circuit to Solenoid F.
- 4
Check Low or Contaminated Transmission Fluid — Insufficient or dirty transmission fluid can cause solenoid operation problems and trigger this code as a secondary symptom.
How to Fix It
- 1
Inspect and Repair Solenoid F Wiring
Visually inspect all wiring and connectors leading to Solenoid F for corrosion, breaks, or loose connections. Repair or replace damaged wiring and clean corroded terminals with electrical contact cleaner.
- 2
Replace Solenoid F
If wiring is intact, test the solenoid with a multimeter for resistance and continuity. If faulty, replace the solenoid with a new or remanufactured unit.
- 3
Check and Clean PCM/TCM Connectors
Disconnect the transmission control module or PCM connectors and inspect for corrosion, damage, or bent pins. Clean with electrical contact cleaner and ensure connections are tight.
- 4
Transmission Fluid Service
Drain old transmission fluid and refill with the correct type and quantity specified for your vehicle. A fluid flush may be necessary if fluid is dark or contaminated.
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