How do I fix OBD fault code P0967?

Inspect and reseat the solenoid connector; corrosion or loose pins often cause high voltage signals.. Drain and refill with OEM-spec fluid; contaminated fluid can affect solenoid response.. Replace the solenoid if wiring and fluid are confirmed good.

OBD Code P0967: Pressure Control Solenoid B Control Circuit High

Q: What does OBD code P0967 mean?

Pressure Control Solenoid B Control Circuit High. The transmission's pressure control solenoid B is receiving too much electrical voltage, like a light switch stuck in the "on" position. This prevents the solenoid from properly controlling transmission fluid pressure.

Q: What are the symptoms of fault code P0967?

Transmission shifting harshly or erratically, Check Engine Light illuminated, Transmission overheating or limp mode activation

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What This Actually Means

In plain language — no jargon

The transmission's pressure control solenoid B is receiving too much electrical voltage, like a light switch stuck in the "on" position. This prevents the solenoid from properly controlling transmission fluid pressure.

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Symptoms You May Notice

3 known symptoms for this code

Transmission shifting harshly or erratically

Check Engine Light illuminated

Transmission overheating or limp mode activation

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How Your ECU Detects This

Technical sensor logic and voltage thresholds

The ECM monitors the voltage and current supplied to Pressure Control Solenoid B. When voltage remains persistently high (above the normal operating threshold), the ECM detects a control circuit fault. This prevents proper pressure modulation in the transmission.

Voltage & Parameter Thresholds

Parameter	Normal Range	Fault Condition
Solenoid Control Voltage	0-12V modulated PWM signal	Voltage stuck high >11V continuously
Circuit Resistance	4-14 ohms	<2 ohms (short to power)

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Diagnostic & DIY Fix Guide

Check these in order — from cheapest to most complex

1

Wiring harness connector

Inspect and reseat the solenoid connector; corrosion or loose pins often cause high voltage signals.

2

Transmission fluid

Drain and refill with OEM-spec fluid; contaminated fluid can affect solenoid response.

3

Pressure Control Solenoid B

Replace the solenoid if wiring and fluid are confirmed good.

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When to See a Professional Mechanic

Not all fault codes are safe to DIY

Code P0967 is a moderate fault. You can generally drive to a workshop, but avoid long trips or high-load driving (motorway, uphill towing) until it is diagnosed. If the code keeps returning after clearing, or if you notice the symptoms listed above worsening, do not delay professional diagnosis. Many moderate codes have multiple possible root causes — a mechanic with live OBD data can identify the exact fault more efficiently than part-by-part trial and error.

Safety note: OBD-II codes identify the system or circuit where a fault was detected — they do not always identify the exact failed component. A professional mechanic using live sensor data will diagnose the root cause more accurately than replacing parts based on the code alone.

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How to Clear Code P0967

What happens after you fix the fault

Once the fault is repaired, P0967 can be cleared using any OBD-II scanner. Connect the scanner, navigate to "Clear Codes" or "Erase DTCs," and confirm. The check engine light turns off immediately.

The code will return if the root cause was not actually fixed. The ECM re-detects the fault within 1–3 drive cycles and sets the code again.

✅ Safe to Clear When

Fault has been diagnosed and repaired
You want to confirm the repair worked
Code appeared after a sensor was cleaned

⚠️ Do Not Clear When

Preparing for an emissions/PUC test
Root cause is still undiagnosed
Check engine light is flashing

Emissions test note: Clearing codes resets OBD readiness monitors. Most vehicles need 50–100 km of mixed driving before monitors complete. Do not clear codes immediately before an emissions or PUC inspection.