What Does P0962 Mean?
The TCM has detected that the voltage on the Pressure Control Solenoid A (PCS-A) control circuit is consistently lower than expected, indicating a short to ground or an excessively low resistance path. This prevents proper pulse-width modulation of the solenoid, typically causing the transmission to default to maximum line pressure. The result is harsh, banging shifts and the transmission may enter limp or failsafe mode.
Safety Warning
Harsh shifts caused by uncontrolled maximum line pressure can damage clutch packs and bands over time. The transmission may enter limp mode, restricting the vehicle to a single gear. Limit driving to what is necessary to reach a repair facility.
Common Causes
35%
Short to ground in the PCS-A wiring harness (chafed insulation contacting case or body)
30%
PCS-A solenoid coil internally shorted, reducing resistance below specification
20%
Corroded or shorted pins at the transmission case connector allowing cross-circuit contact
10%
Fluid-contaminated connector allowing electrical leakage to ground
5%
TCM internal driver circuit shorted low
Diagnostic Steps
1
Disconnect the transmission case connector and measure PCS-A solenoid resistance — should be 4-8 ohms. Significantly lower readings (below 3 ohms) indicate an internally shorted solenoid.
2
With the connector disconnected, measure insulation resistance from each PCS-A wire to the transmission case (ground) — should be greater than 10K ohms. A low reading pinpoints a short to ground in the internal harness.
3
Inspect the transmission case connector for fluid contamination, corroded pins, and signs of heat damage. Clean thoroughly and check for pin-to-pin shorts.
4
Inspect the external wiring harness from the TCM to the transmission connector for chafing, pinched wires, or damaged insulation, especially near brackets and heat shields.
5
If the solenoid and harness test within specification, measure the voltage at the TCM PCS-A output pin with the connector mated and the key on — compare to expected commanded voltage to isolate a TCM driver fault.
Estimated Repair Cost
$200 - $1,400
Parts + labor, varies by vehicle and location
The TCM has detected that the voltage on the Pressure Control Solenoid A (PCS-A) control circuit is consistently lower than expected, indicating a short to ground or an excessively low resistance path. This prevents proper pulse-width modulation of the solenoid, typically causing the transmission to...
The most common cause of P0962 (Pressure Control Solenoid "A" Control Circuit Low) is: Short to ground in the PCS-A wiring harness (chafed insulation contacting case or body)
Typical repair costs for P0962 range from $200 to $1,400, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Harsh shifts caused by uncontrolled maximum line pressure can damage clutch packs and bands over time. The transmission may enter limp mode, restricting the vehicle to a single gear. Limit driving to what is necessary to reach a repair facility.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P0962 to identify the root cause.
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Quick Info
Category
Powertrain
System
Automatic Transmission / Transaxle
Difficulty
Type
Generic (SAE)
Recommended Tools
OBD2 Scanner
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