2018 Honda Pilot engine problems

The automatic idle-stop feature engages when the vehicle stops at a light or in traffic, shutting off the engine to conserve fuel. When the driver releases the brake to accelerate, the engine fails to restart. Instead, the vehicle shifts into neutral, dash lights flash or freeze, electrical systems malfunction (radio off, screens dark), and the vehicle becomes immobilized. The driver must shift to park, press the start button multiple times, or wait 45–90 seconds while traffic backs up. The issue is documented across multiple owner forums and has been reproducible in traffic scenarios involving A/C use or busy intersections.

When: Typically occurs at traffic lights, in stop-and-go traffic, and in heavy traffic with A/C running; some owners note increased frequency in summer months or after weather exceeding 90°F.

Symptoms owners cite: Engine fails to restart after idle-stop engagement; Vehicle shifts into neutral unexpectedly; Dashboard lights flicker or freeze; Radio and cabin lights cut out or cycle on/off; Multiple warning messages flash (battery, smart entry, airbag, brake, ABS, emissions); Vehicle immobilized at intersection; Hazard lights inoperative in some cases; Lurching forward when engine eventually restarts

Codes mentioned: P0741 (Torque Converter Clutch Circuit Performance)

Repairs/costs cited: Battery replacement attempted by dealership in multiple cases; issue persists. Owners report using jumper cables or battery packs to restart. Disabling idle-stop feature manually before each drive eliminates the problem, but the feature re-enables automatically.

Recalls/TSBs owners mention: Honda issued a software update/recall for certain VINs related to idle-stop problems, but subsequent complaints indicate the fix did not resolve the issue in all vehicles. Technical Service Bulletin issued for idle-start/stop sensor replacement, but not all vehicles were included.

Internal engine bearing degradation characterized by metal-on-metal knocking sound from the engine block, loss of engine power, inability to accelerate, and catastrophic engine seizure. Owners report black or low oil, metal shavings in the oil pan, and mechanics finding worn or scored bearing surfaces. The failure occurs without prior warning in some cases; in others, owners note a slight rattling noise weeks before total seizure. Engine diagnostics confirm rod knock or bearing wear necessitating complete engine replacement at costs of $13,000–$23,000. Some vehicles seized mid-drive, creating safety-critical situations.

When: Failures reported between 40,000 and 180,000 miles, with several clustering around 100,000–116,000 miles. One owner reported sudden seizure at 101,375 miles after weeks of rattling.

Symptoms owners cite: Engine knock or knocking sound from engine block; Metal-on-metal grinding sound in lower engine; Engine runs very rough; Check engine light illuminates or flashes; Loss of power during driving; Unable to accelerate above 35 mph; Engine vibration or violent shaking; Sudden engine seizure with loss of all propulsive power; Low or black oil observed during inspection; Metal shavings found in oil pan

Codes mentioned: Rod knock confirmed at dealership, Connecting rod bearing failure (associated with NHTSA 23V751000)

Repairs/costs cited: Complete engine replacement required; costs cited as $13,000–$23,000. One owner reported the connecting rod bearing replacement at independent mechanic. Mechanics have noted that oil changes prior to failure do not prevent the problem, suggesting a manufacturing defect in bearing material or design.

Recalls/TSBs owners mention: Honda issued NHTSA Campaign 23V751000 (Engine and Engine Cooling) for connecting rod bearing failure; however, many affected vehicles' VINs were excluded from the recall despite identical symptoms and model year. Related 2016–2020 Acura MDX vehicles are recalled for the same engine. Honda offered payment plans in some cases but denied coverage in others. Some owners reported Honda stating no recalls were applicable to their VIN.

Fuel pump malfunction triggering check engine light and emissions system warnings. Owners report engine stalling, inability to start, and check engine light displaying 'EMISSIONS SYSTEM PROBLEM' message. Some owners cite a safety recall notice for defective fuel pump but report dealership misdiagnosis or denial of recall applicability. One owner was charged $720.45 in repairs for unrelated issues while the fuel pump recall work was not performed. Parts availability delays (months-long) prevent timely repair.

When: Over 3 years of vehicle ownership; one owner reported persistent issues despite parts availability delay extending into February and beyond.

Symptoms owners cite: Engine will not start; Engine stalls while driving or idling; Check engine light illuminates; Emissions system problem message displays; 'EMISSIONS SYSTEMS PROBLEM/CHECK ENGINE' warning

Codes mentioned: Check engine light (P-codes not specified in narratives)

Repairs/costs cited: Fuel pump replacement required. One owner was charged $720.45 for unrelated diagnostic work and repairs; fuel pump was not replaced. Another owner reported parts unavailable and dealership unable to provide concrete timeline for repair.

Recalls/TSBs owners mention: Honda issued a safety recall notice for defective fuel pump on certain 2018 Pilots. However, parts availability has been severely delayed, with Honda telling owners to check back in future months. Some owners report recall denial from dealerships claiming the VIN is not included or that issues are unrelated to the recall. American Honda Motor Co. denied one owner's claim, citing that issues were not related to the safety recall.

Premature failure of the high-pressure fuel pump with excessive vibration of the high-pressure fuel line. The fuel line vibrates freely within a 3-inch span of movement during acceleration, creating loud shaking noise. Mechanics warn that the rupture risk requires replacement of the entire fuel system (pump and lines), with risk of fire. Honda has issued Service Bulletin 16-013 but has not recalled the component despite known risk.

When: Vibration and pump failure occur during normal operation; timing not specified in complaint.

Symptoms owners cite: Extreme vibration of high-pressure fuel line during acceleration; Loud shaking noise from fuel line area; High-pressure fuel pump failure

Repairs/costs cited: Replacement of high-pressure fuel pump and all associated lines required due to rupture risk. No specific cost cited, but owner notes that Honda has passed the cost of the design flaw to consumers by denying warranty coverage (vehicle over 60,000 miles).

Recalls/TSBs owners mention: Honda is aware of the issue and issued Service Bulletin 16-013 but has not issued a recall. Warranty coverage denied after 60,000 miles.

Sporadic engine hesitation during acceleration and loss of power during normal driving. Some owners report the vehicle fails to accelerate when pressed, then suddenly jolts or shuts down when releasing throttle. Others describe the engine refusing to pick up speed or maintaining low-gear operation despite transmission attempts to shift. Check engine light may or may not be present. The hesitation is unpredictable and difficult to reproduce, complicating dealer diagnosis.

When: Sporadic incidents during highway driving, expressway merging, and normal acceleration; one owner noted hesitation while getting on/off highways.

Symptoms owners cite: Engine hesitation during acceleration; Sudden jerking or jolting during acceleration; Vehicle slowing automatically when releasing accelerator pedal; Inability to accelerate above specified speed (35 mph reported); Transmission stuck in low gear despite pedal input; Strange sound from transmission/engine during hesitation; Loss of motive power; Check engine light may illuminate

Codes mentioned: 5th gear pressure switch failure noted in one case

Repairs/costs cited: One owner was told a 5th gear pressure switch had failed; however, the part was deemed not under the transmission warranty despite controlling transmission operation. Owner was offered only a $300 voucher by Honda.

Recalls/TSBs owners mention: Honda declined diagnostic assistance for some cases, stating owners must pay $300 to test whether hesitation is related to a known recall. One owner cited a Technical Service Bulletin related to the hesitation but was told it did not apply to their vehicle. Another owner reported that Honda has offered no assistance despite the failure being related to a known issue.

Constant chirping or squealing sound originating from the engine area when the engine is running. The noise resembles descriptions posted on Honda Pilot forums. Timing and root cause unclear; in one case, the noise disappeared after dealer service but reappeared three years later.

When: Approximately 3 years after vehicle purchase (September 2018) in one case; timing in other cases not specified.

Symptoms owners cite: Constant chirping sound from engine area when running; Squealing noise resembling forum-documented Pilot issue

Repairs/costs cited: Dealer service resolved issue temporarily in one case; cause not specified in narrative.

Critical failure resulting in engine fire on highway. Owner reported transmission overheat warning, loss of acceleration, loud engine pop, and flames erupting from under the hood. Vehicle was completely engulfed and destroyed as a total loss.

When: While driving on highway at speeds exceeding 55 mph with outside temperatures over 90°F.

Symptoms owners cite: Transmission too hot warning on dashboard; Loss of acceleration ability; RPM increasing but speed decreasing; Loud popping noise from engine; Flames shooting from under hood on driver side; Multiple loud pops followed by total vehicle fire

Codes mentioned: Transmission overheat warning

Repairs/costs cited: Vehicle destroyed; no repair attempted. Total loss.

Recalls/TSBs owners mention: Owner reported the transmission overheat warning had occurred multiple times over three years at highway speeds above 55 mph and outside temperatures exceeding 90°F. Honda told the owner there was no active recall and nothing could be done each time the issue was reported.

Vehicle engine stalls suddenly while driving at highway or city speeds with no warning and refuses to restart. Vehicle becomes immobilized in traffic or on highway shoulder, requiring towing. In one case, the driver was trapped between two trailer trucks and had to be towed 3 hours. The stall occurs when eco-stop engages unexpectedly or spontaneously, with the vehicle unable to be shifted to neutral to push to safety.

When: Two documented instances: April 22, 2022 at 41,337 miles and October 31, 2023 at 54,136 miles. Owner also reported waiting on fuel pump recall parts.

Symptoms owners cite: Engine shuts off suddenly while driving (highway speeds cited); Engine will not restart after stall; Vehicle unable to shift into neutral for pushing; Complete loss of propulsive power; Vehicle immobilized in middle of traffic lane

Repairs/costs cited: At dealership, diagnostics checked starter but found engine had ceased (seized). Owner awaiting recall parts on fuel pump and other engine recall work.

Recalls/TSBs owners mention: Honda dealership in Gilbert, AZ did not answer calls or provide rental cars during the recall wait period. Owner transferred vehicle to another dealership (Honda Superstition Springs in Mesa, AZ) for repair.

Total engine seizure or catastrophic failure during normal driving, with sudden loss of all power and inability to restart. No prior warning signs in most cases, though one owner noted a slight rattling three weeks prior. Oil maintained properly per owner records. Engine requires complete replacement. Vehicle left in dealer's possession or towed to residence.

When: Failures occurring between 100,000 and 180,000 miles; one failure at 106,000 miles (just out of warranty), another at 101,375 miles after slight rattling for 3 weeks, another at 102,000 miles, another at 165,000 miles.

Symptoms owners cite: Sudden loud crash or pop from engine block; Dramatic loss of engine power; Inability to accelerate or move vehicle; Complete engine seizure; Catastrophic engine failure requiring replacement; Possible prior rattling sound (one case: 3 weeks prior)

Codes mentioned: Rod bearing failure (associated with NHTSA 23V751000 in multiple cases)

Repairs/costs cited: Complete engine replacement required at cost of $13,000–$23,000. Dealer informed one owner that Honda had not approved the work order and owner must pay full cost or tow the vehicle out. Vehicle was just out of warranty (106,000 miles) in one case. One dealer diagnosed rod bearing damage.

Recalls/TSBs owners mention: Honda issued recall 23V751000 for engine and engine cooling (connecting rod bearing failure), but many affected vehicles' VINs were excluded. Manufacturer contacted in some cases but denied warranty assistance or stated VIN was not included in recall. One owner reported dealer stating the issue was a factory defect that Honda would resolve, but Honda did not approve repair work order.

Premature wear to engine camshaft causing rough running, loss of power, and multiple warning lights. Vehicle was drivable to a safe location and required parts order. Failure occurred at highway speeds.

When: At 180,000 miles approximately; failure occurred while driving at interstate speeds.

Symptoms owners cite: Engine runs very rough; Loss of engine power while driving; All warning indicators on display activated; Vehicle deceleration to shoulder

Repairs/costs cited: Parts ordered and repairs in progress. Drivetrain still under extended warranty.

Check engine light and emissions warning followed by repeated failures despite multiple attempted repairs. Fuel injector kit and front catalytic converter replacement did not resolve the issue; fuel sensors also replaced without success.

When: First appearance at 169,187 miles (check engine light and emissions message upon starting).

Symptoms owners cite: Check engine light illuminates on startup; Emissions system warning message displays

Repairs/costs cited: Fuel injector kit replaced; failure persisted. Front catalytic converter replaced; failure persisted. Fuel sensors replaced; failure persisted. Vehicle not repaired; issue remains unresolved.

Recalls/TSBs owners mention: Manufacturer not contacted.