Powertrain Definition only Lights the check engine lamp

P2874: Clutch B Pressure Disengagement Too High

Standardized SAE J2012 code · P28xx codes

What does P2874 mean?

Clutch B disengagement pressure exceeds the calibrated maximum. The clutch may not separate cleanly.

The code tells you which monitor failed, not which part is broken. Test before replacing parts.

Symptoms

  • Check engine or transmission warning light on
  • Harsh, delayed, or missing shifts
  • Possible limp mode (locked in one gear)
  • Slipping or shuddering during gear changes

Common causes

  • High Pressure regulator stuck at high output
  • Medium Control solenoid characteristic drift

Likelihood is a general estimate across vehicles; your make and model may differ.

Add your car to see reports of P2874 on the same make and model first.

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