Transmission

P0962 — Pressure Control Solenoid A Control Circuit Low

Severity: medium Drive with care, to a shop

What P0962 means

The transmission control module (or PCM) drives pressure control solenoid A to set hydraulic line pressure, which applies clutches and shifts gears. P0962 sets when the voltage in the solenoid's control circuit is lower than expected, usually from a short to ground or a solenoid winding with too little resistance. The module can't regulate pressure properly and often puts the transmission into limp mode.

Symptoms

  • Check Engine or transmission warning light on
  • Limp mode with a fixed gear
  • Harsh or delayed shifts
  • Jerking or banging between gears
  • Slipping under acceleration
  • Worse fuel economy

Possible causes

  1. Failed pressure control solenoid A with a shorted winding
  2. Short to ground in the solenoid wiring
  3. Damaged internal transmission wiring harness (chafed or cracked insulation)
  4. Corroded or damaged connectors and terminals
  5. Faulty TCM/PCM (uncommon)
  6. Dirty or degraded fluid, metal debris in the transmission

How to diagnose

  1. Scan all codes and freeze-frame data and note any related pressure or gear ratio codes
  2. Check transmission fluid level and condition, look for debris or a burnt smell
  3. Inspect the transmission connector and harness for moisture, corrosion and chafing
  4. Measure solenoid resistance and compare with the manufacturer's specification
  5. Check the control wire for a short to ground with connectors unplugged
  6. Verify power and control signal at the module connector with a meter or scope
  7. If wiring and solenoid are good, test the control module and check for software updates

Common fixes

  • Replace pressure control solenoid A
  • Repair or replace the damaged wiring section or connector
  • Replace the internal transmission harness
  • Change the transmission fluid and filter
  • Replace or reprogram the control module once confirmed faulty

Questions and answers

What does P0962 mean?

It means the control circuit of pressure control solenoid A in the transmission reads low voltage. The usual cause is a short to ground in the wiring or a failed solenoid.

Can I drive with a P0962 code?

Only briefly and to get it repaired. The transmission is typically in limp mode, and extended driving can overheat it and wear the clutches.

How do I fix P0962?

Start by checking fluid, wiring and the connector, then test solenoid resistance. Repairing the harness or replacing the solenoid fixes most cases.

This is general information about the code. The meaning can differ between makes and models: a scan tool and the repair manual for your car will show the exact cause.