2009 Honda Accord powertrain problems

Variable valve timing control (VTC) actuator produces loud grinding, rattling, or ratcheting noise during cold engine startup, lasting 1–2 seconds. Noise occurs only when engine has been off 4+ hours. Multiple owners report the noise worsens over time despite dealer repairs. Honda Service Bulletin 09-010 (updated 10/21/11) identifies the VTC actuator as defective. A 2011 Honda software update for fuel-injector and VTC timing was issued but does not resolve the grinding noise, and some owners report the noise began after the software update.

When: Cold start (engine off 4+ hours); occurs within first 1–2 seconds of ignition activation; persists for 1+ year in reported cases

Symptoms owners cite: Loud grinding noise on cold startup; Rattling sound from engine compartment at startup; Ratcheting noise during ignition activation; Noise worsens over months/years; Only occurs on cold start

Repairs/costs cited: Dealerships quote $1,600+ for VTC actuator replacement with redesigned part and associated work; one owner reports prior dealer repair did not fully resolve the issue but reduced noise volume

Recalls/TSBs owners mention: Honda Service Bulletin 09-010 (dated 08/17/10, updated 10/21/11) describes VTC actuator as defective; Honda issued 2011 software update (Product Update: Software Update to Improve Fuel-Injector and VTC Timing, September 2011) but this does not address the grinding noise; no recall issued; redesigned VTC actuator exists but not offered as factory recall

Engine consumes oil at abnormally high rate, requiring owners to add 1 quart of oil every 7 days despite regular oil changes every 7,000 miles. One owner reports consumption issue concurrent with VTC grinding noise and VSA/oil warning lights that remain illuminated even after error codes are cleared. Honda identified this issue and released a 2011 software update to address it, but owners report the problem persists.

When: During normal driving; noticed as ongoing issue over months of vehicle ownership

Symptoms owners cite: 1 quart oil consumption per week; Oil warning light remains on; VSA (Vehicle Stability Assist) warning light remains illuminated

Repairs/costs cited: Regular oil changes every 7,000 miles insufficient; supplemental quart additions required weekly

Recalls/TSBs owners mention: 2011 Honda software update issued (September 2011 Product Update) to improve fuel-injector and VTC timing and reduce oil consumption; update notes that fuel-injector timing and VTC timing at cold start may create deposits on oil control rings contributing to increased consumption

Engine RPM surges unexpectedly to near red-line without driver input, or vehicle accelerates/decelerates independently. Events occur during low-speed driving (e.g., at traffic lights, stop signs) and at highway speeds. In one case, RPM surge occurred when driver released brake and applied gas; in another, the vehicle accelerated without foot on accelerator pedal. Dealer states the issue will not show on scanners.

When: During city/highway driving at variable speeds (traffic light starts, highway cruising); multiple incidents reported in span of one month

Symptoms owners cite: Sudden RPM surge to near red-line without driver input; Vehicle accelerates without accelerator pedal engagement; Vehicle decelerates independently without driver action; Engine stalls without warning during driving; Loss of throttle control response

Repairs/costs cited: Dealer advises issue will not appear on scanner diagnostics; no repair method documented in narratives

Engine stalls while vehicle is in motion at highway speeds or during acceleration from stops. One instance reports vehicle lost all electrical power during driving; another reports stall at 55 mph with subsequent independent acceleration/deceleration. Engine warning light may illuminate; vehicle typically restarts after brief delay.

When: During active driving at highway speeds (55+ mph) or while accelerating from stops; one instance reports stall followed by loss of all power

Symptoms owners cite: Complete engine stall during highway driving; Loss of all electrical power while driving; Engine warning light illuminated post-stall; Vehicle restarts after delay

Check engine warning light illuminates during driving, often accompanied by engine hesitation, jerking, or misfire. Issues typically occur intermittently (e.g., every two months) and cannot be reliably duplicated by mechanics. One owner reports jerking and hesitation while driving on freeway; vehicle jerks backwards while in motion. Dealer diagnosed one case as requiring PCM software update and valve adjustment; another case involved crankshaft sensor malfunction that recurred weeks after replacement.

When: Intermittent; one owner reports occurrence roughly every two months; another reports engine stalls on startup with check engine light

Symptoms owners cite: Check engine light illumination; Engine misfire; Jerking and hesitation during acceleration; Vehicle lurches backward while driving; Engine hesitation between gear shifts; Recurring stalls on startup

Repairs/costs cited: One owner charged $638.60 for PCM software update and valve adjustment (may have been covered under recall); crankshaft sensor replacement ($) did not resolve issue; sensor malfunctioned again weeks after replacement

Recalls/TSBs owners mention: Honda Recall ID #74308 covers PCM/TCM software updates at no charge for issues with control module software; one owner was incorrectly charged for this recall service

Transmission exhibits hard downshifts when decelerating or slowing, and significant hesitation/delay when shifting between gears during acceleration. Vehicle shows lack of power during uphill acceleration from stop, with RPMs reaching very high levels before transmission engages higher gear. One manual transmission owner reports inability to shift into 3rd gear during acceleration at slow-to-moderate pace; issue occurs randomly. 6-speed manual transmission TSB did not resolve the issue.

When: During normal driving transitions (acceleration from stop, gear changes, deceleration); hard downshifts occur during slowing or speed reduction; 3rd gear issue occurs randomly during moderate acceleration

Symptoms owners cite: Hard downshifts when slowing or decelerating; Significant hesitation/delay between gear shifts; Lack of power during uphill acceleration from stop; Inability to engage 3rd gear (manual transmission); Delayed gear engagement until high RPMs reached; Shredding and tearing noise during reverse-to-drive transitions

Repairs/costs cited: 6-speed manual transmission TSB on 3rd gear issue did not resolve problem

Transmission produces rattling, grinding, shredding, or tearing noises, particularly during startup or gear transitions. One owner reports transmission rattling during cold startup for two years with progressively worsening noise; independent mechanic and dealer both diagnosed transmission failure. Another owner reports loud thumping noise specifically during reverse-to-acceleration gear shifts.

When: At startup (cold engine) or during gear transitions; one case reports failure worsening over two years

Symptoms owners cite: Rattling noise from transmission at startup; Grinding or shredding noise in transmission; Tearing noise during gear shifts; Loud thump noise during reverse-to-acceleration transitions; Transmission noise becoming progressively louder

Repairs/costs cited: One case: Independent mechanic and dealer both confirmed transmission failure but repair not completed

Right-side front axle shaft breaks or snaps in the middle, causing complete loss of power to wheels during driving. Event occurred while vehicle was making a right turn from stop sign on uphill incline, creating imminent hazard of accident if traffic had been present.

When: During low-speed turning maneuver (right turn from stop sign on uphill incline)

Symptoms owners cite: Complete loss of power to wheels during turn; Vehicle unable to complete turning maneuver; Vehicle appeared to slip into neutral

Repairs/costs cited: Independent service center diagnosed right-side front axle shaft as broken/snapped in middle

Seal on passenger-side half axle bearing began leaking after 29,200 miles on a certified used vehicle with only 9,000 miles driven since purchase. Owner believes defect originated at factory since bearing failure would not occur in just 9,000 miles of driving. Bearing burnout risk can cause axle failure.

When: At 29,200 total mileage (9,000 miles after certified used vehicle purchase); discovered during routine 30,000 mile service

Symptoms owners cite: Leaking seal on passenger-side half axle bearing

Repairs/costs cited: Identified during 30,000 mile routine service inspection

Vehicle rolled out of driveway while shifter was in Park position, resulting in crash into a house that damaged bedroom wall and window. Gear remained in Park after the incident. Manufacturer investigation found no evidence of transmission or ignition defect, though defect appears plausible given that vehicle was in Park.

When: While parked in driveway; vehicle mileage was 40,000 at time of incident

Symptoms owners cite: Vehicle rolled out of driveway while in Park; Vehicle struck house structure; Gear remained in Park position after incident

Recalls/TSBs owners mention: Manufacturer investigated and stated no evidence of transmission or ignition defect

Vehicle lunged violently forward while driver had foot on brake pedal. In the reported case, vehicle was pulling into parking space when it suddenly accelerated forward into concrete wall with such force that driver could not stop it using brakes. Driver was hospitalized for 2 days with injuries.

When: During low-speed parking maneuver with foot on brake pedal

Symptoms owners cite: Vehicle lunged forward violently; Inability to stop using brake pedal; Collision with fixed object (concrete wall)

Crankshaft sensor fails, requiring replacement. After replacement, sensor malfunctions again within weeks. Issue persists for 2 years of 3-year ownership. Owner notes that software update is a separate charge after sensor and installation, though he believes update should be free with sensor replacement.

When: Recurring malfunction over 2–3 years of ownership

Symptoms owners cite: Check engine light illumination; Engine stalling or running issues

Repairs/costs cited: Sensor replacement required; software update is separate additional cost after installation

Engine shudders and vehicle stalls; owner alleges defect is related to transmission control module (TCM) or powertrain control module (PCM). Owner references a recall that describes the exact symptoms their vehicle exhibits, but Honda will not honor the recall based on vehicle identification number (VIN).

When: During operation; timing not specified

Symptoms owners cite: Engine shuddering; Vehicle stalling

Recalls/TSBs owners mention: Recall exists that describes the reported symptoms, but Honda refuses to apply recall based on VIN; owner responsible for transmission repair/replacement costs

During highway driving, transmission makes clicking sound followed by complete lock-up, immobilizing the vehicle.

When: During highway driving

Symptoms owners cite: Transmission clicking noise; Complete transmission lock-up

Engine will not start; starter motor spins faster than normal but engine does not turn over or run. Issue prevents vehicle operation.

When: At startup

Symptoms owners cite: Starter motor spinning without engine engagement; Complete failure to start or run

Engine stalls immediately upon startup with check engine light illumination. Issue has been recurring frequently since vehicle acquisition.

When: At engine startup

Symptoms owners cite: Engine stalling on startup; Check engine light illumination; Frequent recurrence