P0761
Shift Solenoid B Stuck On
Powertrain Transmission Control Solenoid malfunction 🟡 Moderate — Fix within a week
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What This Actually Means
In plain language — no jargon

Your transmission's Shift Solenoid B is electrically stuck in the ON position, preventing it from turning off when needed. Think of it like a light switch that won't flip off—the solenoid stays energized and disrupts normal gear shifting.

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Symptoms You May Notice
3 known symptoms for this code
Transmission stuck in limp mode or specific gear
Harsh or delayed gear shifts
Check Engine Light illuminated
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Embedded Systems Insight
What the ECU/ECM is actually computing

The ECM monitors solenoid B's electrical resistance and response time during shift commands. It detects when the solenoid fails to de-energize after the command signal ends, indicating the valve is mechanically or electrically stuck open.

Voltage & Parameter Thresholds

Parameter Normal Range Fault Condition
Solenoid De-energize Time 50-200ms response after signal removal No de-energization detected or exceeds 500ms
Solenoid Coil Resistance 5-15 ohms Short circuit (<2 ohms) or open circuit (>20 ohms)
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Diagnostic & DIY Fix Guide
Check these in order — from cheapest to most complex
1
Transmission fluid and filter
Change fluid and filter to remove debris that may be preventing solenoid closure.
2
Shift Solenoid B connector
Inspect and clean the solenoid connector for corrosion or loose pins causing electrical malfunction.
3
Shift Solenoid B
Replace the solenoid if it remains stuck after cleaning; internal wear or carbon buildup cannot be repaired.