P0777: Pressure Control Solenoid B Stuck On
What Does P0777 Mean?
P0777 is a diagnostic trouble code indicating: Pressure Control Solenoid B Stuck On. This code relates to the transmission system. It has been reported in NHTSA complaints across 5 different vehicle models.
Symptoms of P0777
- ⚠️ Check engine light illuminated
- ⚠️ Shifting problems
- ⚠️ Vehicle enters limp/reduced power mode
Common Causes
- 🔍 Faulty oxygen sensor
- 🔍 Worn timing chain or belt
- 🔍 Transmission component failure
- 🔍 Torque converter malfunction
- 🔍 Sensor or control module malfunction
P0777 Reports by Year
Real Owner Reports
From NHTSA complaint database — actual owner descriptions.
"THIS INCIDENT IS CONCERNING MY 2005 HONDA ACCORD EX V6, VIN (GIVEN ABOVE) . I AM THE FIRST OWNER AND CAR HAS 85000 MILES ON IT. ON 21ST SEPTEMBER 2014 AUTOMATIC TRANSMISSION FAILED WITHOUT ANY WARNING WHILE I WAS DRIVING ON FREEWAY TODAY. CHECK ENGINE LIGHT NEVER TURNED ON .THE CAR JUST STOPPED ON"
— Honda Accord owner, 09/21/2014
"OUR 2005 HONDA ODYSSEY HAD A TRANSMISSION FAILURE ON THE WAY OUT OF TOWN FROM GEORGIA TO FLORIDA OVER THE 4TH OF JULY WEEKEND. ON WEDNESDAY WE JUST HAD AN O2 SENSOR AND RECALL WORK (MASTER CYLINDER & ONE OTHER ISSUE) COMPLETED AT A HONDA DEALER IN GEORGIA. I THEN TOOK IT DOWN THE STREET TO GET TW"
— Honda Odyssey owner, 07/03/2014
"My Transmission went out on my 2016 Honda Pilot I bought it on 8/25/24 with 68,000 miles on it, six months later I have 81,000 miles on it and I’ve been quoted $9222 to install a rebuilt transmission at the dealership. 3 mechanics & transmission specialist do NOT even work or offer to replace transm"
— Honda Pilot owner, 02/21/2025
Source: NHTSA Complaints Database
Most Reported Vehicles for P0777
Based on NHTSA owner complaint data.
| # | Vehicle | Reports |
|---|---|---|
| 1 | JEEP PATRIOT | |
| 2 | HONDA ACCORD | |
| 3 | HONDA ODYSSEY | |
| 4 | HONDA PILOT | |
| 5 | CHEVROLET TAHOE |
P0777 Reports by Vehicle
Detailed NHTSA complaint analysis for each vehicle model.
Frequently Asked Questions
Is it safe to drive with this transmission code?
Do I need a full transmission rebuild?
How much does a transmission repair cost?
Reported Repair Costs for P0777
Based on 3 owner-reported repair costs from NHTSA complaints.
⚠️ 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
- 🔧 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)
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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.