What Does the Engine Code P2815 Mean?

If your car is showing the P2815 engine code, you have a transmission issue.
Written by Anthony William
Reviewed by Melanie Reiff
If you see the P2815 engine code, the pressure control solenoids that your Transmission Control Module (TCM) uses to control the hydraulic pressure in your transmission are no longer functioning properly. This issue could affect your transmission directly, so you should get it fixed immediately.
Diagnostic trouble codes (DTCs) are designed to help drivers identify engine issues in their vehicles. If you own an OBD-II code reader, you’ll be able to
understand specific car OBD codes
so that you can identify, evaluate, and solve your engine’s ailments.
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can assist you and your car with expert information on DTCs and exceptional savings on car insurance. In this article, we’re examining the P2815 engine code: what it means, how to fix it, and how much it costs to repair. 
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What does the engine code P2815 mean?

Definition: Pressure Control Solenoid ‘G’ Control Circuit High
The P2815 engine code indicates a problem with your car’s Pressure Control Solenoid ‘G’, a key component in providing the gear ratios required to move a car forward.
The Transmission Control Module (TCM) uses the vehicle speed signal to determine whether the vehicle is in the 1st, 2nd, 3rd, 4th, 5th, or 6th gear position.
The TCM then compares the actual gear with the gear shift schedule in the TCM’s memory to identify valve-related mechanical issues.
When the TCM detects a pressure control solenoid is malfunctioning, it triggers the P2815 code.

How much will it cost to fix?

Mechanics typically charge between $75 to $150 an hour to address issues stemming from a P2815 engine code.

What can cause the P2815 engine code?

If a P2815 engine code has appeared in your car, it’s likely that the issue stems from your transmission. Specifically, you are probably looking at some form of pressure control solenoid failure or a breakdown of one or more transmission components.
Other specific transmission issues that you could be facing include: 
  • Transmission Control Module (TCM) failure
  • Transmission fluid running low
  • Pressure control solenoid ‘G’ harness has opened or become shorted
  • Pressure control solenoid ‘G’ circuit has a poor electrical connection 
  • A blockage in your transmission valve body
You could also be facing a general wiring issue in or around your transmission. 

Common symptoms of the P2815 engine code

check engine light
may be the only symptom you see when it comes to the P2815 engine code, but there are a couple of other key signs to watch for, including:
  • Increased gas consumption
  • Transmission failing to shift properly
If you see any of these signs, take your vehicle to a mechanic immediately. 

How serious is the P2815 engine code?

The P2815 engine code directly affects drivability and should be addressed as soon as it appears. Any vehicle that has a potentially compromised transmission could become a danger on the road and needs to be taken to a mechanic immediately. 

Can I fix the P2815 engine code myself?

Repairing the P2815 engine code is a complex procedure best left to experienced professionals, but there are several steps you can take at home to inspect your vehicle to see if you’re dealing with a Pressure Control Solenoid issue. 
Your best courses of action are: 
  • Visually inspect the wiring harness and connector 
  • Look for broken, bent, or generally misshaped or damaged connector pins
If you see any of these telltale signs of transmission damage,
take your car to a mechanic
for a thorough inspection as soon as possible.

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