Pressure Control Solenoid 'C' Control Circuit High
The P2830 code indicates that the powertrain control module (PCM) has detected a high voltage condition in the control circuit of the pressure control solenoid 'C'. This solenoid is part of the transmission's hydraulic control system, regulating line pressure for proper shifting. A high circuit voltage typically points to a short to power, open circuit, or a faulty solenoid, which can lead to harsh shifts, slipping, or transmission damage.
01. Most Common Causes
- Faulty pressure control solenoid 'C'
- Short to power in the solenoid control circuit
- Open or high resistance in the wiring or connector
- Corroded or damaged connector pins
- Failed PCM (rare)
02. Symptoms You Will Notice
- Check Engine Light illuminated
- Harsh or erratic shifting
- Transmission slipping or delayed engagement
- Reduced fuel economy
- Transmission stuck in limp mode
03. Step-by-Step Diagnosis
Step 1: Scan for codes and record freeze frame data.
Step 2: Inspect wiring and connectors for damage, corrosion, or loose pins.
Step 3: Test solenoid resistance with a multimeter (compare to specs).
Step 4: Check for voltage at solenoid connector with key on (should be battery voltage).
Step 5: Perform a circuit continuity test between PCM and solenoid.
04. Commonly Affected Makes
05. Frequently Asked Questions
Is it safe to drive with this code?▼
It is not recommended. Driving with a high circuit voltage can cause harsh shifts, transmission slipping, or internal damage. Have it diagnosed promptly.
How much does it cost to fix?▼
Repair costs range from $150 to $400, depending on whether the solenoid, wiring, or PCM needs replacement. Labor and parts vary by vehicle.