P0967
Pressure Control Solenoid B Control Circuit High
Powertrain Transmission Control Pressure Solenoid Circuit 🟡 Moderate — Fix within a week
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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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Embedded Systems Insight
What the ECU/ECM is actually computing

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.