P2861: Shift Fork B Actuator Circuit Low
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to generic code level because this page is not scoped to one make or model.
Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).
- SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for P2861.
- NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.
Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.
What Does P2861 Mean?
P2861 code: Shift Fork B Actuator Circuit Low. Symptoms, likely causes, diagnostic path, severity, and repair cost context.
Symptoms of P2861
- ⚠️ Warning light or diagnostic trouble code is stored
- ⚠️ Fuel economy may drop, fuel smell or exhaust smell may increase, or emissions readiness may fail
- ⚠️ The vehicle may drive normally while the monitor continues to fail
- ⚠️ Vehicle may fail an emissions or safety inspection until the code is resolved and monitors reset
Common Causes
- 🔍 Sensor reading, wiring, connector, actuator, emissions, or module condition detected by the control module
- 🔍 Low battery voltage, poor ground, software, or network issue affecting the related circuit
- 🔍 Mechanical condition that should be confirmed with live data before replacing parts
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"WHILE DRIVING ON THE FREEWAY AROUND 6PM AND TAKING AN ON RAMP ONTO ANOTHER FREEWAY THE FORD FOCUS STALLED MID-DRIVE AND WOULD NOT ACCELERATE ANYMORE OR SWITCH TO HIGHER GEARS WHEN THE ACCELERATOR WAS PRESSED. THE FORD IMMEDIATELY COULD NOT GO ANY FASTER THAN FIRST GEAR AND LUCKILY WE AVOIDED AN ACCI"
— Ford Focus owner, 2020-06-19
Source: NHTSA Complaints Database
Most Reported Vehicles for P2861
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | FORD FOCUS |
Frequently Asked Questions
Is P2861 enough to replace a part?
Can I drive with P2861?
What To Do Next
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1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
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2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
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3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.