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OBDII/EOBD diagnostics trouble codes definition

If your car is equipped with OBD-II or EOBD, you can access over 5,000 generic OBD-II diagnostic trouble codes (DTCs). These codes cover various vehicle systems, including Powertrain (P0XXX, P2XXX, P34XX), Body (B0XXX), Chassis (C0XXX), and Network/Communication (U0XXX, U2XXX, U3XXX). Additionally, there are more than 13,500 manufacturer-specific OBD-II codes available for diagnosing issues unique to different car brands and models. Make sure you're equipped with the right tools to understand and resolve these trouble codes to keep your vehicle running smoothly.

By using these OBD-II codes, you can effectively diagnose issues related to engine performance, safety features, suspension, and more.

Supported manufacturers with specific OBD2 codes:

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Detailed Description of Error P0796

OBDII error code P0796 is a generic trouble code that indicates a problem with the Pressure Control Solenoid ''C'' Performance/Stuck Off in a vehicle''s transmission system. This code is typically associated with automatic transmissions that use a hydraulic pressure control system to regulate the transmission''s gear shifts and torque converter engagement.

The Pressure Control Solenoid ''C'' is responsible for controlling the hydraulic pressure in the transmission''s clutch packs and bands. When the solenoid is energized, it opens a valve that allows hydraulic fluid to flow into the clutch packs and bands, which in turn engages the transmission''s gears.

When the code P0796 is triggered, it means that the Powertrain Control Module (PCM) has detected a problem with the Pressure Control Solenoid ''C'' performance or that it is stuck in the off position. This can cause problems with the transmission''s gear shifts, torque converter engagement, and overall performance.

Possible Causes of Error P0796

  • Dirty or clogged hydraulic fluid filter
  • Low hydraulic fluid level or incorrect fluid type
  • Failed or faulty Pressure Control Solenoid ''C''
  • Short circuit or open circuit in the solenoid''s electrical connector
  • Corrosion or damage to the solenoid''s electrical connector
  • Failed or faulty PCM (Powertrain Control Module)
  • Internal transmission mechanical problem
  • Wiring harness problem

Possible Fixes for Error P0796

  • Check the hydraulic fluid level and top it off if necessary
  • Replace the hydraulic fluid filter if it is dirty or clogged
  • Replace the Pressure Control Solenoid ''C'' if it is faulty or failed
  • Repair or replace the solenoid''s electrical connector if it is corroded or damaged
  • Check the wiring harness for any signs of damage or corrosion and repair or replace it if necessary
  • Use a scan tool to clear the code and test the transmission''s performance
  • Perform a transmission flush and replace the hydraulic fluid if it is dirty or contaminated
  • Consult a professional mechanic if the problem persists after trying the above fixes
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