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P0966 fault code: what it means

P0966: Problem in A/T clutch pressure control solenoid valve B circuit. Transmission may go into limp mode.

Engine and gearbox (powertrain) · Costly if missed

Usual causes, most likely first

  1. pressure control solenoid B
  2. wiring fault

P0966 by make

Honda

Problem in A/T clutch pressure control solenoid valve B circuit. Transmission may go into limp mode.

Usual causes: pressure control solenoid B; wiring fault

Nissan

CVT primary pressure solenoid (pressure control solenoid B) circuit shorted to ground. Shock into gear, slow acceleration and no lock-up.

Usual causes: wiring shorted to ground; primary pressure solenoid valve

What the repair usually costs

Not sure what P0966 means on your car? Ask Credov.

Before you clear it

Write the code down or photograph the scanner first. A code that comes straight back after clearing points to a fault that is still there. A car whose codes were cleared just before you arrived may be hiding one: the scanner's readiness monitors show "not ready" for a while after codes are cleared.

Researched by Credov from manufacturer and workshop sources. A fault code points to where a fault may be; a workshop confirms it with a diagnosis. Browse all fault codes.