What Does P2815 Mean?
The TCM has detected abnormally high voltage in the pressure control solenoid 'G' control circuit. This indicates the circuit voltage exceeds the maximum threshold, typically due to an open ground or short to power.
Common Causes
35%
Open ground circuit preventing solenoid from completing electrical path
25%
Open circuit in solenoid control wire between TCM and solenoid
20%
Failed pressure control solenoid 'G' with internal open circuit
12%
Short to voltage source in wiring harness
8%
Failed TCM driver circuit unable to pull voltage low
Diagnostic Steps
1
Step 1: Check all ground connections for transmission control system; verify continuity and clean corrosion
2
Step 2: Measure voltage at solenoid connector with key on; excessive voltage confirms high circuit condition
3
Step 3: Disconnect solenoid and measure circuit voltage; if voltage drops to normal, solenoid is open
4
Step 4: Check for short to power by measuring voltage on control wire with TCM disconnected
5
Step 5: Test TCM ground circuits and verify TCM has proper power supply and ground
Estimated Repair Cost
$200 - $950
Parts + labor, varies by vehicle and location
The TCM has detected abnormally high voltage in the pressure control solenoid 'G' control circuit. This indicates the circuit voltage exceeds the maximum threshold, typically due to an open ground or short to power.
The most common cause of P2815 (Pressure Control Solenoid "G" Control Circuit High) is: Open ground circuit preventing solenoid from completing electrical path
Typical repair costs for P2815 range from $200 to $950, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Transmission will likely operate in fail-safe mode with limited functionality. Vehicle may experience reduced power and limited gear selection.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2815 to identify the root cause.
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Quick Info
Category
Powertrain
System
Transmission
Difficulty
Type
Generic (SAE)
Recommended Tools
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