What does Error Code P0796 mean?
Critical Issue
DTC Code P0796 indicates that the Pressure Control Solenoid 'C' is stuck off, affecting the transmission line pressure regulation. This issue is detected when the gear required by the ECM does not match the actual gear during driving.
What are the symptoms of Error Code P0796?
- Engine Light ON: The check engine light or service engine soon warning light illuminates, indicating a potential issue with the transmission system.
- Shift Shock: The vehicle may experience harsh or abrupt shifting, which can be felt as a jolt or shock during gear changes, potentially linked to the pressure control solenoid 'C' being stuck off.
What causes Error Code P0796?
- Low transmission fluid level can lead to insufficient hydraulic pressure, causing the solenoid to malfunction.
- Dirty transmission fluid may cause blockages, preventing the solenoid from operating correctly.
- A faulty pressure control solenoid valve 'C' can result in improper pressure regulation within the transmission.
- An open or shorted harness in the pressure control solenoid valve 'C' can disrupt electrical signals, affecting solenoid function.
- Poor electrical connections in the solenoid circuit can lead to intermittent or complete loss of solenoid operation.
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How to fix Error Code P0796?
- Initial Inspection: Check the transmission fluid level and condition. Ensure the fluid is at the correct level and is not dirty or contaminated. If the fluid is dirty, proceed with a fluid change.
- Transmission Fluid Change: Drain the old transmission fluid and replace it with new fluid. This can help remove any foreign material that may be obstructing the solenoid or valve body.
- Transmission Pan Removal: Remove the transmission pan to inspect for excessive debris or metal particles. This can indicate a mechanical failure within the transmission.
- Solenoid Inspection: Inspect the pressure control solenoid 'C' for any signs of obstruction or damage. Clean or replace the solenoid if necessary.
- Valve Body Inspection: Inspect the transmission valve body for any blockages or damage. Clean or repair as needed to ensure proper fluid flow.
- Reassembly and Testing: Reassemble the transmission components and test drive the vehicle to ensure the issue is resolved and the DTC code does not reappear.