P2831 — Shift Fork A Position Circuit

What Does P2831 Mean?

P2831 is a diagnostic trouble code indicating: Shift Fork A Position Circuit. This code relates to the powertrain system. It has been reported in NHTSA complaints across 1 different vehicle models.

Symptoms of P2831

⚠️ Check engine light illuminated
⚠️ Hesitation during acceleration
⚠️ Loss of engine power
⚠️ Failure to accelerate

Common Causes

🔍 Sensor or control module malfunction

P2831 Reports by Year

2020

2

2021

1

2017

1

2016

1

2015

1

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, 06/19/2020

"HELP ME UNDERSTAND WHY THE NHTSA HAS NOT FORCED A RECALL CONCERNING THE MAJOR ISSUES FOUND WITH THESE TRANSMISSIONS? HAS FORD PULLED THE WOOL OVER THE EYES OF NHTSA JUST AS THEY HAVE WITH THEIR VERY OWN CUSTOMERS? MY CAR SITS AT THE DEALERSHIP BECAUSE IM NOT CONVINCED THE MECHANIC HAS DETERMINED THE"
— Ford Focus owner, 06/15/2017

"NEW 2012 FORD FOCUS B/C I DIDN'T WANT USED CAR REPAIRS. AT 57.2K MILES THE TRANSMISSION STARTED TO MAKES NOISES, AUTOMATICALLY SHIFT ON ITS OWN SOMETIMES TO A CRAWL, ROLL BACKWARDS & LURCH FORWARD WHEN STOPPED AT LIGHTS/STOP SIGNS, NO POWER UP HILLS. THE AUTOMATIC TRANSMISSION COST $1,000-$1,500 DOL"
— Ford Focus owner, 04/25/2016

Source: NHTSA Complaints Database

Most Reported Vehicles for P2831

Based on NHTSA owner complaint data.

#	Vehicle	Reports
1	FORD FOCUS

P2831 Reports by Vehicle

Detailed NHTSA complaint analysis for each vehicle model.

FORD FOCUS

8 NHTSA reports · Peak: 2012, 2013

Frequently Asked Questions

Can I drive with this code?

It depends on the severity. If the vehicle runs normally, short trips are usually OK. If you notice performance issues, drivability problems, or warning lights beyond the check engine light, get it checked soon.

Will this code clear itself?

Some codes clear automatically after the underlying issue is fixed and several drive cycles pass. But the root cause must be addressed first.

How do I find the exact cause?

A code alone doesn't pinpoint the failed part. You need a diagnostic scan ($50-150 at most shops) that reads freeze frame data and live sensor readings to identify the specific component.

Reported Repair Costs for P2831

Based on 5 owner-reported repair costs from NHTSA complaints.

Low End

$1000

Typical

$1000

High End

$1500

⚠️ These are owner-reported costs, not estimates. Actual costs vary by location, labor rates, and root cause. Source: NHTSA complaints database.

What To Do Next

Possible Fixes

🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
🔧 Test the relevant sensor(s) with a multimeter before replacing
🔧 If DIY repair isn't feasible, get a diagnostic from a trusted mechanic ($50-150)

1
Find your vehicle above
Click your make and model for real owner reports and common causes specific to your vehicle.
2
Check for recalls
Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.
3
Get a professional diagnosis
A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

P2831: Shift Fork A Position Circuit