How severe is this DTC?
The severity of this code typically starts as moderate but can quickly escalate to a more severe level if not corrected promptly. In situations that cause transmission clunking in the pinion, permanent internal damage may occur, making the issue serious.
What are some of the symptoms of the code?
Symptoms of a P2727 fault code may include:
- Increased fuel consumption
- Engine light activated
- Transmission overheating
- Transmission slipping during gear shifts
- Transmission shifting hard (gear clunking)
- Symptoms that may resemble misfires
- Transmission put into limp mode by the PCM
What are some common causes of the code?
Causes of this P2727 transmission code may include:
- Faulty pressure control solenoid
- Contaminated transmission fluid
- Restricted transmission filter
- Faulty transmission pump
- Faulty transmission valve body
- Blocked hydraulic passages
- Corroded or damaged connector
- Faulty or damaged wiring
- Faulty PCM
What are the troubleshooting steps for P2727?
Before starting the troubleshooting process for any malfunction, you should research technical service bulletins (TSBs) for the specific vehicle by year, model, and transmission. In some cases, this can save significant time in the long run by pointing you in the right direction.
Fluid and wiring inspections
The first step is to check the fluid level and examine the condition of the fluid for contamination. Before changing the fluid, you should (if possible) check the vehicle records to verify when the filter and fluid were last changed.
A detailed visual inspection to check the wiring condition for obvious defects follows. Check connectors and connections for security, corrosion, and damaged pins. This should include all wiring and connectors for the transmission pressure control solenoids, transmission pump, and PCM. Depending on the specific configuration, the transmission pump may be electrically or mechanically driven.
Advanced steps
Advanced steps always become very vehicle-specific and require appropriate advanced equipment to operate accurately. These procedures require a digital multimeter and vehicle-specific technical references. You should always obtain troubleshooting data specific to your vehicle before proceeding with advanced steps. Voltage requirements vary depending on the specific vehicle model. Fluid pressure requirements may also vary based on transmission design and configuration.
Continuity checks
Unless otherwise indicated in the technical data, normal readings for wiring and connections should be 0 ohms resistance. Continuity checks should always be performed with power disconnected from the circuit to avoid short-circuiting and causing further damage. Resistance or lack of continuity indicates faulty wiring that is open or shorted and should be repaired or replaced.
What are the common repairs for this code?
- Replacing fluid and filter
- Replacing faulty pressure control solenoid
- Repairing or replacing faulty transmission pump
- Repairing or replacing faulty transmission valve body
- Flushing transmission to clean passages
- Cleaning corrosion from connectors
- Repairing or replacing faulty wiring
- Flashing or replacing faulty PCM
Possible misdiagnosis may include:
- Engine misfire issue
- Transmission pump malfunction
- Internal transmission problem
- Transmission issue
Hopefully, the information in this article will help you resolve the issue with your P2727 pressure control solenoid control circuit diagnostic trouble code(s). This article is strictly for informational purposes, and the technical data and service bulletins specific to your vehicle will always take precedence.