Service Bulletin - The front rocker arm oil control valve is leaking.
full bulletin at NHTSA ↗2011 Honda Accord engine problems
moderate 22 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
22
Recalls
0
Avg fix
$3,100
When does it fail?
Of the 22 engine complaints filed for the 2011 Honda Accord, here's the actual mileage breakdown — failures cluster heaviest at 100,000-125,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
"Service bulletin - American Honda is announcing a powertrain warranty extension as a result of a settlement of a class action captioned, Soto et al.v. American Honda Motor Co., Inc., Case No. 3:12-cv-1377-SI (N.D. Cal.). The piston rings on certain cylinders may rotate and align, which can lead to spark plug fouling. This can set DTCs P0301 No. 1 cylinder misfire detected, P0302 No. 2 cylinder misfire detected, P0303 No. 3 cylinder misfire detected, P0304 No. 4 cylinder misfire detected, and cause the MIL to come on. American Honda is extending the powertrain warranty to cover repairs related to engine misfire (that triggers DTCs P0301 through P0304) to 8 years with unlimited mileage from t
full bulletin at NHTSA ↗"Service bulletin - American Honda is extending the warranty coverage on the Piston Rings and Pistons for 2008-11 Accord L4 to 8 years from the original date of purchase or 125,000 miles, whichever comes first. The warranty extension does not apply to any vehicle that has ever been declared a total loss or sold for salvage by a financial institution or insurer, or has a branded, or similar tittle under any state's law."
full bulletin at NHTSA ↗Service bulletin - Emission certification labels that were replaced on a small number of vehicles may have been replaced with a label listing incorrect information. The affected emission labels are replacement service parts, and were not installed at the factory; they were installed during postmanufacturing repairs that required replacement of the underlying part. This will cause the vehicle to be non-compliant with emissions regulations.
full bulletin at NHTSA ↗Service bulletin - American Honda is announcing a powertrain warranty extension as a result of a settlement of a class action captioned, Soto et al.v. American Honda Motor Co., Inc., Case No. 3:12-cv-1377-SI (N.D. Cal.). The piston rings on certain cylinders may rotate and align which can lead to spark plug fouling. This can set DTCs P0301 No. 1 cylinder misfire detected, P0302 No. 2 cylinder misfire detected, P0303 No. 3 cylinder misfire detected, P0304 No. 4 cylinder misfire detected, and cause the MIL to come on.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2011 Accord's 2.4L engine presents multiple recurring problems that owners describe as widespread and inadequately addressed by Honda.
VTC actuator cold-start noise is the most commonly reported issue: owners hear a loud rattle or grinding sound lasting 2–5 seconds on cold startup, especially after overnight sitting. The noise stops once the engine warms. Owners say Honda issued a service bulletin admitting the VTC actuator is the cause but has not recalled it. Dealership quoted prices range from $680 to $900 for replacement. Several owners report the dealership dismissed the noise as harmless, only to later demand full out-of-pocket payment after warranty expiration.
Oil fouling of spark plugs causes misfires, hesitation, and power loss. Owners retrieved codes P0300–P0304 and report white smoke from the tailpipe in one case. Honda's VCM-2 class action resulted in an 8-year warranty extension, but owners falling outside that window are denied coverage. One owner was told Honda no longer covers this known defect on vehicles after 2014.
Sudden power loss during highway driving has occurred as early as 4,700 miles on new vehicles. One owner's wife couldn't accelerate out of traffic and was stranded for hours. The root causes cited include stuck camshaft solenoids and cylinder deactivation system failure.
Hesitation during acceleration from stops recurs even after repairs and tune-ups, costing owners thousands in attempted fixes with only temporary relief.
Same Honda Accord engine reports on nearby years: 2009 · 2010 · 2012 · 2013 · 2014
Failure modes owners describe
VTC (Variable Timing Control) Actuator Failure – Cold Start Rattle
The VTC actuator fails to maintain proper oil pressure, causing a loud rattling or grinding noise at cold startup lasting 2–5 seconds. The noise resolves after the engine warms and oil circulates. Owners report this as a widespread issue across 2.4L engines in 2010–2011 Accords. Honda issued a service bulletin (TSB) acknowledging the problem but has not issued a recall. If left unrepaired, the timing chain can stretch, leading to further engine damage.
When: Cold starts, particularly after the car has sat overnight; noise disappears once engine warms (typically within 2–5 seconds). Occurs from as early as 2 years of ownership to beyond 100,000 miles.
Symptoms owners cite: Loud rattling or grinding noise at cold startup lasting 2–5 seconds; Noise especially pronounced after overnight sitting or long idle periods; Noise stops once engine reaches operating temperature; Eventual oil light illumination and oil loss over time; Rattling can persist or intensify during subsequent cold starts
Repairs/costs cited: Honda dealership quoted $680–$900 for VTC actuator replacement; owners report paying out of pocket since warranty typically expires before failure becomes severe.
Recalls/TSBs owners mention: Honda issued TSB acknowledging VTC actuator as cause; no recall issued. Dealers have stated in writing that no repair is available from Honda. Dealers have also indicated the noise causes no harm and owners should not worry.
Oil Fouling of Spark Plugs – Misfire and Poor Performance
Oil enters the engine's combustion chamber due to a design defect, prematurely fouling spark plugs and causing cylinder misfires. This leads to hesitation, loss of power, check engine light illumination, and flashing codes. The issue is tied to a known class action lawsuit (VCM-2) and appears linked to abnormal oil consumption.
When: Can occur from early ownership through higher mileage (120,000+ miles reported). Class action extended warranty covered 8 years from purchase date, but owners have reported the issue occurring both before and after the warranty window.
Symptoms owners cite: Hesitation or delayed acceleration when depressing the throttle; Loss of power during highway driving or acceleration; Check engine light (steady or flashing); Engine misfiring or rough running; Visible white smoke from tailpipe (in at least one case)
Codes mentioned: P0301, P0302, P0303, P0304, P0300
Repairs/costs cited: Spark plug replacement and piston ring cleaning have been performed by independent mechanics; however, owners report the issue recurring after these repairs. One owner paid for a tune-up and routine maintenance with no permanent resolution.
Recalls/TSBs owners mention: Honda acknowledged this as a known defect and established a VCM-2 class action lawsuit resulting in an 8-year warranty extension from purchase date. However, owners who fall outside this window are denied coverage. Honda advised at least one owner to have an oil consumption test completed.
Severe Power Loss and Engine Misfiring – Stuck Solenoid / Cylinder Deactivation Failure
The camshaft timing solenoid becomes stuck or the cylinder deactivation system (ECO mode) fails to recover, causing severe loss of power and violent engine shaking. In one case, the vehicle entered a 3-cylinder mode and could not return to normal operation. This creates a dangerous safety condition, as drivers cannot accelerate out of traffic.
When: Occurs during highway driving at 55–65 mph; can happen early in vehicle ownership (as early as 4,700 miles on a new vehicle).
Symptoms owners cite: Sudden violent engine shaking or vibration as if misfiring; Severe loss of power; accelerator response dramatically reduced; Check engine light illuminates; Engine may enter ECO mode (3-cylinder operation) and fail to recover to 6-cylinder mode; Continued shaking and hesitation even with accelerator to the floor
Codes mentioned: P3400
Repairs/costs cited: Dealership reprogrammed the PCM and topped off oil (vehicle was 1.5–2 quarts low); however, the root cause (solenoid or timing system) was not fully explained or resolved. Owner reported being stranded for 3 hours awaiting a tow truck.
Recalls/TSBs owners mention: Dealership could not explain the shaking; advised owner to monitor oil level and return if the problem recurs. No formal recall or TSB cited.
Hesitation and Power Loss During Acceleration
Vehicle hesitates or pauses when accelerating from a stop or rolling stop, with the engine remaining in idle mode before suddenly accelerating. Some owners report multiple visits to the dealer for the same recurring issue with no permanent fix. One owner reports the issue has cost thousands in repairs but only provides temporary relief.
When: Occurs during normal driving, particularly when turning or accelerating from low speeds. One owner reports this has been recurring for two years.
Symptoms owners cite: Hesitation or pause when depressing the accelerator pedal; Engine remains at idle before sudden acceleration; Independent deceleration at slow speeds; Frequent recurrence despite repairs; Engine may shut down completely in severe cases
Codes mentioned: MAF sensor fault codes (reported by one owner but specific codes not provided)
Repairs/costs cited: One owner performed a tune-up and routine maintenance with no permanent resolution. Another paid for multiple dealer visits with only temporary fixes. One owner reports being told by Honda that coverage for this issue ends after 2014 model year.
Recalls/TSBs owners mention: One owner was informed that TSB 13-078 Warranty Extension had expired. Another owner was advised by Honda that this known issue is no longer covered after 2014 models.
Whining Noise and Timing Chain Slip – Low Oil Condition
A whining noise occurs during acceleration, correlating with the vehicle being due for an oil change. The vehicle is found to be low on oil, causing the timing chain to slip. The repair is temporary; the issue recurs even after topping off oil.
When: Occurs at approximately 108,600 miles; noise appears cyclically when the vehicle is due for an oil change.
Symptoms owners cite: Whining noise during acceleration at 20 mph; Noise stops when accelerator pedal is released; Occurs repeatedly when vehicle is due for oil service; Timing chain slip diagnosed by independent mechanic
Repairs/costs cited: Independent mechanic topped off oil; however, the failure recurred, suggesting a possible underlying oil consumption issue.
Recalls/TSBs owners mention: Honda advised the owner to have an oil consumption test completed; the test had not been performed at the time of the complaint.
Rear Main Seal Oil Leak – Early Engine Failure Requiring Short Block Replacement
A newly purchased 2011 Accord (3 months old, low mileage) developed a significant oil leak at the rear main seal area. Diagnosis escalated to requiring a full short block engine replacement, including transmission removal, gasket/seal replacement, and A/C system service. Following the repair, the steering wheel began shaking at stops. Owner suspects the rebuilt engine or assembly quality is compromised.
When: Discovered during the second oil change service (approximately 6,000–8,000 miles). Engine replacement performed 5/25–6/8/2011; steering shaking reported 6/9/2011, one day after return.
Symptoms owners cite: Oil leak at rear main seal detected during routine service; Inspection revealed additional leak at engine block assembly; Steering wheel shaking at complete stops and in park (post-repair); Shaking began immediately after engine replacement
Repairs/costs cited: Dealer replaced short block engine, transmission, all related gaskets and seals, evacuated and recharged A/C system. Work was performed under warranty on a 3-month-old vehicle.
Recalls/TSBs owners mention: Honda and dealer refused to replace vehicle or offer a similar replacement, citing that the car was a few months old and they would incur a loss. Offered customer satisfaction accessories instead.
Synthesized from 22 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
The contact owns a 2011 Honda Accord. The contact stated while driving approximately 65 MPH, the check engine warning light was flashing. The contact stated that the vehicle was vibrating and was losing motive power. The contact drove the vehicle back to the residence and later had the vehicle towed to a local independent mechanic. The contact stated that the mechanic diagnosed the vehicle, and…
My engine makes a loud rattling sound for 2-3 seconds after a cold start-up, especially after the car sat overnight. After 2-3 seconds, the sound goes away. According to Honda tsb, the vtc actuator is faulty and needs to be replaced to resolve the problem. If left untreated, the timing chain can be stretched which leads to reduced fuel economy and possibly other engine problems. Up to the time of…
Had engine trouble with your 2011 Honda Accord?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2011 Honda Accord?
It's a documented issue but not catastrophic. 22 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Across the 16 complaints that reported odometer mileage, most engine failures cluster between 16,292 and 120,000 miles, with the median around 100,990. A quarter of owners report trouble before 16,292; a quarter make it past 120,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2011/Honda/Accord.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.