P3400 on HONDA PILOT — P34C8

Q: "What does P3400 mean on a HONDA PILOT?"

"P3400 indicates: P34C8. This is a powertrain code. 3 HONDA PILOT owners have reported this to NHTSA."

Q: "What are the most common causes of P3400 on HONDA PILOT?"

"Based on 3 NHTSA reports, the most commonly cited components are: Power Train,Engine, Engine. These percentages are based on the component field in owner complaints."

Q: "Is P3400 serious on my HONDA PILOT?"

"Of 3 NHTSA reports for this code on HONDA PILOT, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic."

Q: "What should I do if my HONDA PILOT shows P3400?"

"1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare."

What P3400 Means on Your HONDA PILOT

P3400 is a diagnostic trouble code indicating: P34C8. This code relates to the powertrain system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

3 HONDA PILOT owners have reported this issue to NHTSA across model years 2010-2013. Most reports come from the 2010, 2011 model years. The most commonly reported component is Power Train,Engine (66.7% of reports).

Real HONDA PILOT Owner Reports

Source: NHTSA Complaints Database

"2010 honda pilot exl with approx 100,000 miles with the following issues: check engine light code p3400, very low oil pressure, replaced two oil pressure switches, torque converter beginning to fail causing vibration and shuddering at 45 - 50 mph with low accelerator pressure."

— 2010 HONDA PILOT owner · POWER TRAIN,ENGINE · Filed 12/22/2017

"My 2011 honda pilot has had a severe shutter when accelerating from a dead stop to up to 40mph. it has gotten progressively worse since i bought it in in 2014."

— 2011 HONDA PILOT owner · ENGINE · Filed 11/01/2017

"Engine mil illuminated. code p3400 indicated through obd. no low oil pressure indication prior to mil, could lead to engine failure. replaced both front and rear rocker arm oil switches."

— 2013 HONDA PILOT owner · POWER TRAIN,ENGINE · Filed 04/28/2018

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

1

'10

1

'11

1

'13

Common Causes on HONDA PILOT

Based on NHTSA complaint component analysis for this vehicle.

POWER TRAIN,ENGINE 66.7%

ENGINE 33.3%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.

Frequently Asked Questions

What does P3400 mean on a HONDA PILOT? ▾

P3400 indicates: P34C8. This is a powertrain code. 3 HONDA PILOT owners have reported this to NHTSA.

What are the most common causes of P3400 on HONDA PILOT? ▾

Based on 3 NHTSA reports, the most commonly cited components are: Power Train,Engine, Engine. These percentages are based on the component field in owner complaints.

Is P3400 serious on my HONDA PILOT? ▾

Of 3 NHTSA reports for this code on HONDA PILOT, none involved a crash or fire. However, any diagnostic code should be evaluated by a qualified mechanic.

What should I do if my HONDA PILOT shows P3400? ▾

1) Check for recalls on your VIN at nhtsa.gov/recalls. 2) Get a professional diagnosis — a code alone doesn't identify the exact failed part. 3) Get 2-3 repair estimates to compare.

P3400 on Other Vehicles

→ All codes reported on HONDA PILOT