P0963

Pressure Control Solenoid A Control Circuit High

Q: Is it safe to drive with P0963?

Short-term yes, but the transmission may be in a protective limp mode with poor shift quality. Prolonged slipping or harsh shifts can wear the clutches, so repair it promptly.

Q: Can I just clear P0963?

It will come back until the circuit fault is fixed, since this is an electrical control-circuit code, not a one-time glitch.

Transmission Generic OBD-II Medium

What it means

P0963 means the transmission control module sees higher-than-expected voltage in the control circuit for pressure control solenoid A — the solenoid that regulates hydraulic line pressure. It usually points to an open or high-resistance wire, a failed solenoid, or a bad connection, and often forces the transmission into a limp mode with harsh or incorrect shifts.

Medium

Can I keep driving? Usually driveable, but the transmission may drop into a limp/failsafe mode with harsh or wrong shifts — get it fixed soon to avoid slippage damage.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Harsh, delayed, or erratic shifts
Slipping between gears
Transmission stuck in a limp/failsafe gear

Common causes

Most likely first

Open or high-resistance wiring in the solenoid circuitLikely
Failed pressure control (line-pressure) solenoid ACommon
Loose or corroded connector at the solenoid or transmission harnessCommon
Faulty transmission control module (TCM)Less often

How to diagnose & fix

Work through it in order

Read freeze-frame data and inspect the solenoid A wiring and connector for opens, chafing, or corrosion.
Measure the solenoid resistance against spec; replace pressure control solenoid A if it is out of range.
Clean and re-seat the transmission connector, checking for spread or backed-out pins.
If wiring and solenoid test good, have the TCM diagnosed as the last step.

FAQ

Quick answers

Is it safe to drive with P0963?+

Short-term yes, but the transmission may be in a protective limp mode with poor shift quality. Prolonged slipping or harsh shifts can wear the clutches, so repair it promptly.

Can I just clear P0963?+

It will come back until the circuit fault is fixed, since this is an electrical control-circuit code, not a one-time glitch.

Read & clear P0963 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX