What Does P2734 Mean?
The TCM has detected an electrical fault in the pressure control solenoid F circuit. This indicates a problem with the wiring, connector, solenoid coil, or TCM driver circuit rather than a mechanical issue.
Common Causes
30%
Open or short circuit in solenoid F wiring harness
25%
Corroded, damaged, or loose connector at solenoid F
25%
Failed pressure control solenoid F with open or shorted coil
12%
Transmission fluid intrusion into electrical connector
8%
TCM internal driver circuit failure
Diagnostic Steps
1
Step 1: Visually inspect solenoid F connector for corrosion, bent pins, or fluid contamination
2
Step 2: Measure resistance across solenoid F terminals (typical 3-10 ohms; out of range indicates fault)
3
Step 3: Check for continuity between TCM connector and solenoid connector on both control wires
4
Step 4: With connector disconnected, measure voltage supply from TCM (should have battery voltage)
5
Step 5: If all wiring and solenoid tests pass, suspect TCM internal driver fault
Estimated Repair Cost
$150 - $900
Parts + labor, varies by vehicle and location
The TCM has detected an electrical fault in the pressure control solenoid F circuit. This indicates a problem with the wiring, connector, solenoid coil, or TCM driver circuit rather than a mechanical issue.
The most common cause of P2734 (Pressure Control Solenoid "F" Electrical) is: Open or short circuit in solenoid F wiring harness
Typical repair costs for P2734 range from $150 to $900, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Transmission may exhibit poor shifting, slipping, or enter limp mode. Safe to drive to a repair facility but avoid extended highway driving.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2734 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
A quality scan tool helps you read codes, view live data, and clear faults.
