Each pressure control solenoid is designed to regulate the hydraulic pressure needed to operate a particular clutch pack or other components. If the ECU detects a high-voltage in its circuit, a P2730 DTC will be triggered.
How Serious is the Code?
When it comes to OBDII trouble codes, a P2730 diagnostic trouble code signals a pretty severe problem with your transmission. A pressure control solenoid high voltage error indicates that there is either an electrical or mechanical problem with the solenoid. This can lead to a number of transmission problems, including slipping, delayed gear changes and engine stalling.
Symptoms of a P2730 include:
- Hard, delayed or erratic shifts
- Slipping through the gears
- Getting ‘stuck’ in a gear
- Vehicle won’t move when in gear
- Engine stalling
- Limp mode
- Decreased fuel economy
- Transmission overheats
- Dirty transmission fluid / filter
- Low transmission fluid level
- Damaged wiring/connector
- Faulty pressure control solenoid
- Faulty transmission pump
- Internal pressure issue
- Valve body issue
- ECU or TCM failure
How to Diagnose the Code?
When diagnosing a P2730 DTC, it’s important to consider the level and condition of the transmission fluid. Not enough transmission fluid will cause the pressure control solenoid not to work properly. Dirty transmission fluid can do the same thing, particularly if the solenoid’s plunger mechanism has been affected by dirt and debris. If the transmission fluid is as it should be, then the wiring and connectors on the transmission wiring harness will need to be checked for signs of damaged/shorted wires and broken/corroded connectors. If everything checks out there, the pressure control solenoid itself will need to be tested. The valve body, transmission pump and ECU may also need to be tested.
What Repairs Will Fix P2730?
- Changing the fluid and filter
- Replace faulty pressure control solenoid
- Repair or replace a faulty transmission pump
- Repair defective transmission valve body
- Install a remanufactured valve body
- Transmission flush to clean passages
- Cleaning corrosion from connectors
- Repairing or replacing wiring
- Flashing or replacing PCM
- P2722 – Pressure Control Solenoid E
- P2723 – Pressure Control Solenoid E Perf or Stuck Off
- P2724 – Pressure Control Solenoid E Stuck On
- P2725 – Pressure Control Solenoid E Electrical
- P2726 – Pressure Control Solenoid E Intermittent
- P2727 – Pressure Control Solenoid E Ctrl Circ / Open
- P2728 – Pressure Control Solenoid E Ctrl Circ Range/Perf
- P2729 – Pressure Control Solenoid E Ctrl Circ Low