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.
What are some of the symptoms of the code?
Symptoms of a P2817 trouble code may include:
- Vehicle enters limp mode
- Transmission slips during gear shifts
- Transmission overheating
- Transmission shifts roughly
- Reduced fuel economy
- Symptoms resembling misfires
- Check engine light illuminated
What are some common causes of the code?
Causes of this P2817 transmission code may include:
- Faulty pressure control solenoid
- Dirty or contaminated fluid
- Dirty or clogged transmission filter
- Faulty transmission pump
- Faulty transmission valve body
- Restricted hydraulic passages
- Corroded or damaged connector
- Faulty or damaged wiring
- Faulty PCM
What are the troubleshooting steps for P2817?
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 circumstances, this can save you significant time in the long run by pointing you in the right direction. You should also check vehicle records to verify when the filter and fluid were last changed if possible.
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 check vehicle records to verify when the filter and fluid were last changed.
A detailed visual inspection to check the condition of the wiring for obvious defects comes next. 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 configuration, the transmission pump may be electric or mechanical.
Advanced steps
Advanced steps always become very vehicle-specific and require appropriate advanced equipment to perform accurately. These procedures require a digital multimeter and vehicle-specific technical references. You should obtain troubleshooting guidelines specific to your vehicle before proceeding with advanced steps. Voltage requirements can be very specific to the particular vehicle model. Fluid pressure requirements will also vary depending on transmission design and configuration.
Continuity checks
Unless otherwise indicated in 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 wiring
- PCM replacement
Possible misdiagnosis may include:
- Engine misfire issue
- Transmission pump problem
- Internal transmission problem
- Transmission problem
Hopefully, the information in this article has been helpful in guiding you in the right direction to correct the issue with your pressure control solenoid trouble code. This article is strictly informational, and technical data and service bulletins specific to your vehicle should always take priority.