P0847 — Transmission Fluid Pressure Sensor/Switch B Circuit Low

What Does P0847 Mean?

P0847 is a diagnostic trouble code indicating: Transmission Fluid Pressure Sensor/Switch B Circuit Low. This code relates to the transmission system. It has been reported in NHTSA complaints across 1 different vehicle models.

Symptoms of P0847

⚠️ Check engine light illuminated

Common Causes

🔍 Transmission component failure

P0847 Reports by Year

2016

1

2018

1

Real Owner Reports

From NHTSA complaint database — actual owner descriptions.

"CHECK ENGINE LIGHT CAME ON, TRANSMISSION "D" LIGHT ON, SHIFTING ROUGHLY. THE CAR WAS IN MOTION ON CITY STREETS WHEN THIS HAPPENED. DIAGNOSTIC CODES RUN: P0756 AND P0847. DIAGNOSTICS RUN PER HONDA SERVICE NEWS ARTICLE "HARD OR DELAYED SHIFTING WITH A/T DTCS P0756 AND P0847" TRANSMISSION FLUID WA"
— Honda Fit owner, 02/08/2016

"WHILE DRIVING HOME AT THE END OF THE DAY, THE CAR STARTED TO LURCH AROUND 20 MPH WHILE DRIVING STRAIGHT IN A PARKING LOT AND ON CITY STREETS. THIS HAD NEVER HAPPENED BEFORE. THE LURCHING CONTINUED FOR THE NEXT 3 MILES UNTIL I GOT HOME. COULDN'T TAKE IT TO THE HONDA DEALER BECAUSE SERVICE DEPT WA"
— Honda Fit owner, 09/04/2018

Source: NHTSA Complaints Database

Most Reported Vehicles for P0847

Based on NHTSA owner complaint data.

#	Vehicle	Reports
1	HONDA FIT

P0847 Reports by Vehicle

Detailed NHTSA complaint analysis for each vehicle model.

HONDA FIT

2 NHTSA reports · Peak: 2008, 2012

Frequently Asked Questions

Is it safe to drive with this transmission code?

Use caution. Transmission codes can indicate serious issues that worsen with continued driving. Avoid highway speeds until diagnosed.

Do I need a full transmission rebuild?

Not necessarily. Many transmission codes are caused by solenoids, sensors, or low fluid — which are much cheaper fixes than a rebuild.

How much does a transmission repair cost?

Solenoid replacement: $200-500. Valve body: $500-1,000. Full rebuild: $1,800-3,500. Get a proper diagnosis first.

What To Do Next

Possible Fixes

🔧 Have the code scanned with a professional-grade scanner to read freeze frame data
🔧 Check transmission fluid level and condition; top off or change if needed
🔧 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.

P0847: Transmission Fluid Pressure Sensor/Switch B Circuit Low