P0796 OBD-II Trouble Code: Pressure Control Solenoid C Performance or Stuck Off

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Cost of diagnosing the P0796 code

P0796 is a diagnostic trouble code (DTC) for "Pressure Control Solenoid C Performance or Stuck Off". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$70.00$30.00
Toyota$70.00$30.00
BMW$70.00$30.00
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Check Engine Light

P0796 code definition

The presence of the P0796 code in the PCM means that an abnormal reading from the electronic pressure control solenoid, or the related circuit, was detected.

What the P0796 code means

The electronic pressure control solenoid is one of the many components used to facilitate and monitor gear shift changes in the transmission. In particular, this part provides the data that allows the PCM to regulate the transmission fluid pressure. If the transmission pressure doesn’t align with the manufacturer’s specifications, it is likely that the gear shift operation will not be performing correctly. In this case, the PCM will store the P0796 code.

What causes the P0796 code?

A faulty electronic pressure control solenoid is the most likely cause of this code; however, blocked transmission fluid passages, low or dirty transmission fluid, faulty electrical components within the circuit, or internal transmission failures could all be to blame.

What are the symptoms of the P0796 code?

Symptoms of the P0796 code can vary, but may include:

  • Disabled shifting function
  • Torque converter clutch may fail to engage or disengage
  • Harsh shifting
  • Slipping transmission
  • Overheated transmission
  • Decreased fuel economy
  • Illuminated Check Engine lamp

How does a mechanic diagnose the P0796 code?

After an OBD-II scanner detects the P0796 code, a technician should begin with an inspection of the transmission fluid. If it is low, it should be refilled; if the fluid is dirty, or smells like it is burnt, this could mean that the entire system needs to be flushed, and refilled with clean fluid.

The next step is to check all electrical components, repairing or replacing any wiring or connectors as necessary. The technician should then continue diagnosing the pressure control components until the fault is discovered. At each step, the mechanic should be sure to clear the code from the PCM and retest the system; if the code does not reappear, it’s likely that the issue has been resolved, and no further repairs will be necessary.

Common mistakes when diagnosing the P0796 code

The most common misdiagnosis with the P0796 code is replacement of the high pressure pump, when the solenoid or the electrical wiring are actually to blame.

How serious is the P0796 code?

Because this code relates directly to the operation of the shifting function, it is very important that it be repaired as soon as possible. If the issue behind the P0796 code is not addressed immediately, it can cause major issues down the road.

What repairs can fix the P0796 code?

There are many ways that a technician can address a P0796 code detection. They include:

  • Replace a faulty electronic pressure control solenoid.
  • Clear blocked transmission fluid passages.
  • Refill low or dirty transmission fluid.
  • Repair or replace faulty electrical components within the circuit.
  • Correct any internal transmission failures.

Need help with a P0796 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

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Check Engine Light
P0796

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Fred

14 years of experience
240 reviews
Fred
14 years of experience
Fred did a excellent job diagnosing our Saturn. Very knowledgeable with all our questions. We will definitely recommend Fred for all of our car needs.
2002 SATURN SL1 - CHECK ENGINE LIGHT IS ON - HUMBLE, TEXAS

Chet

38 years of experience
393 reviews
Chet
38 years of experience
Explained what happened with my car and showed him a piece of metal that came off somewhere from my car. He never hooked up the diagnostic kit to get the warning codes off. My invoice shows PO300 code but my car battery was dead so I don't know if that is why the test was not performed but then how do you get the PO300 code? Then I had told him about the oil leak but the car was never jacked up or inspected underneath. He never saw the hole in the engine block, I am assuming because I have a piece of metal that is what it is from. Since nothing was actually performed on my car (except visual inspection) and he said it was not worth repairing the engine, I don't see why I was still charged $100 dollars. He was nice enough to help push the car over in the garage so I can get my other car into the garage and gave me pointers on how to buy a used car and what to look for.
2006 HYUNDAI SONATA - CHECK ENGINE LIGHT IS ON - SAN DIEGO, CALIFORNIA

Robert

29 years of experience
179 reviews
Robert
29 years of experience
Robert was on time which is always a plus with me. He found the problem right away and reset the error. He gave me a complete update on all the fluids and brakes . Robert is very easy to talk too !
2002 NISSAN PATHFINDER - CHECK ENGINE LIGHT IS ON - MORGAN HILL, CALIFORNIA

Tien

20 years of experience
746 reviews
Tien
20 years of experience
Tien was great and very professional. If my car needs additional service or has any issues in the future, I would strongly like him to complete the task at hand.
2005 FORD MUSTANG - CHECK ENGINE LIGHT IS ON - OAKLAND, CALIFORNIA

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