What Does P2816 Mean?
The TCM has detected a general fault with pressure control solenoid 'H'. This is a broader code indicating electrical or performance issues with this specific solenoid that regulates transmission line pressure.
Common Causes
35%
Failed pressure control solenoid 'H' with internal electrical or mechanical fault
25%
Damaged wiring harness or corroded connectors in solenoid 'H' circuit
20%
Low or contaminated transmission fluid affecting solenoid operation
12%
Clogged valve body passages or stuck valve preventing proper pressure control
8%
Failed TCM unable to properly control solenoid 'H'
Diagnostic Steps
1
Step 1: Check transmission fluid level and condition; verify proper fluid type is installed
2
Step 2: Inspect transmission wiring harness and connectors for damage, corrosion, or moisture intrusion
3
Step 3: Measure resistance of pressure control solenoid 'H' and compare to manufacturer specifications
4
Step 4: Monitor live data for solenoid command duty cycle and actual pressure response
5
Step 5: Test solenoid circuit voltage and ground integrity with key on engine running
Estimated Repair Cost
$250 - $850
Parts + labor, varies by vehicle and location
The TCM has detected a general fault with pressure control solenoid 'H'. This is a broader code indicating electrical or performance issues with this specific solenoid that regulates transmission line pressure.
The most common cause of P2816 (Pressure Control Solenoid "H") is: Failed pressure control solenoid 'H' with internal electrical or mechanical fault
Typical repair costs for P2816 range from $250 to $850, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Vehicle may experience erratic shifting, transmission slipping, or fail-safe mode activation. Continued operation without repair may result in transmission damage.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2816 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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