P3400 on Honda Pilot
P34C8
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Honda Pilot context without treating complaints as confirmed diagnoses.
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 P3400.
- 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 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.
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."
"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."
"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."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Honda Pilot
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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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.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.