P0963
PowertrainTransmission Solenoidhigh severityPressure Control Solenoid "A" Control Circuit High
What P0963 Means
The control circuit for pressure control solenoid A shows a voltage higher than expected. This often points to an open circuit or a short to power.
Symptoms
- Erratic shifting
- Transmission slipping
- Check engine light on
Common Causes
- Open circuit in solenoid wiring
- Short to power/voltage
- Faulty pressure control solenoid
- Faulty TCM/PCM
Diagnostic Steps
- Scan for codes and check freeze frame
- Inspect wiring for opens or shorts to power
- Test solenoid resistance and continuity
- Repair circuit or replace solenoid
🔌 Don't have a code reader?
Any of these will read and clear this code — pick by how deep you want to go.
Budget handheld~$40
ANCEL AD410 →
No-phone-needed handheld — reads, clears, live data, freeze frame.
✓ ANCEL official store
Serious DIY~$100
BlueDriver Pro →
Enhanced codes (ABS, airbag, TPMS) plus repair reports.
SHOP FAVORITEShop-grade tablet~$300
Autel MaxiCOM MK808S →
Bidirectional tests, service resets, all systems.
✓ Autel official store
Pro diagnostics$1,500+
Autel MaxiSys MS906 Pro →
Full-system pro platform — topology mapping, ECU coding, the works.
✓ Autel official store
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