What is the 2006-2010 Honda Ridgeline Spark Plugs Backing Out - Coil Pack Melting and Engine Damage?

The 3.5L aluminum engine with steel spark plugs experiences thermal stress due to temperature differences. Spark plugs back out (loosen) due to aluminum block expansion/contraction cycles, causing misfires and potentially breaking inside the combustion chamber. Loose spark plugs… Repairs typically run $150-$8,000. Severity: high.

What is the 2006-2014 Honda Ridgeline Takata Airbag Inflator Rupture - Unrepaired First-Generation Trucks?

Every 2006-2014 Ridgeline is covered by the Takata ammonium-nitrate inflator recall campaigns. The propellant degrades with age and with cycles of heat and humidity; a degraded inflator can over-pressurize and burst its metal housing during deployment, firing shrapnel into the ca… Repairs typically run $0-$0. Severity: high.

What is the 2006-2014 Honda Ridgeline In-Bed Trunk Water Intrusion and Drainage Clogs?

The Ridgeline's unique in-bed trunk has drainage holes and weep holes designed to channel water out. These drainage holes frequently clog with leaves, pine straw, tree debris, pollen, and mildew. When clogged, rainwater and vehicle washing accumulate inside the trunk, causing rus… Repairs typically run $50-$200. Severity: medium.

What is the 2006-2014 Honda Ridgeline Rear Differential Noise and Shuddering (AWD Models)?

AWD Ridgelines experience noise and juddering from the rear differential, particularly when turning. The differential fluid breaks down prematurely due to contamination from clutch wear debris, condensation, or water intrusion. Water can enter through the breather tube vent in th… Repairs typically run $120-$1,500. Severity: medium.

What is the 2006-2023 Honda Ridgeline Clogged Moonroof Drains and Roof-Seam Sealer Leaks - Wet Headliner and Overhead Console?

Water dripping from the overhead console or pooling on the headliner is a recurring Ridgeline complaint separate from the in-bed trunk leak. Two mechanisms show up on the owners club: the moonroof cassette's front drain tray plugs with pine needles and debris so the tray overflow… Repairs typically run $0-$600. Severity: medium.

What is the 2006-2020 Honda Ridgeline Front Lower Control Arm Ball Joint Wear - Front-End Clunk Over Bumps?

The Ridgeline's front lower ball joint is pressed into the lower control arm and is not serviceable separately, so normal wear condemns the whole arm. Owners club threads on 1G trucks describe a clunk or knock from the front end over expansion joints and driveway lips, often misd… Repairs typically run $350-$900. Severity: medium.

What is the 2006-2022 Honda Ridgeline Dual-Action Tailgate Latch Actuator Failure and Linkage Misadjustment - Tailgate Won't Swing Open?

The Ridgeline's signature dual-action tailgate uses two separate latch mechanisms plus an electric actuator, and the swing-open function fails far more often than the fold-down one. Two distinct failure modes show up across generations: the electric latch actuator motor dies (the… Repairs typically run $0-$700. Severity: medium.

What is the 2006-2014 Honda Ridgeline Power Steering Pump Cold-Start Whine and Feed-Hose O-Ring Leak (TSB 07-86)?

First-generation Ridgelines whine loudly from the power steering pump on cold mornings, quieting as the engine warms. The cause is not usually the pump: the O-ring on the low-pressure supply hose at the pump contracts and hardens with age, letting the pump draw air past it and ae… Repairs typically run $10-$600. Severity: low.

Honda · Known Issues

2009 Honda Ridgeline Problems: 12 Known Issues

2009 model year · 580+ owner reports · Updated August 2026

Share:@au7o.io

According to Au7o's analysis of 580+ owner reports, the 2009 Honda Ridgeline has 12 documented known issues, with 6 rated critical. The most serious are VCM System - Excessive Oil Consumption and Misfires ($81-$8,000 repair), Radiator Cross-Contamination (SMOD) - Catastrophic Transmission Failure ($300-$6,000 repair), Spark Plugs Backing Out - Coil Pack Melting and Engine Damage ($150-$8,000 repair), Takata Airbag Inflator Rupture - Unrepaired First-Generation Trucks ($0-$0 repair), Rear Frame and Subframe Corrosion - Fuel Tank Strap Mounts Rust Through (Recall 22V-430) ($0-$4,500 repair) and Hydraulic Timing Belt Tensioner Leaks Down - Belt Skip and Interference Engine Damage (J35A9) ($900-$5,000 repair). The most commonly reported issue is VCM System - Excessive Oil Consumption and Misfires with 200 owner reports. Across all issues with published estimates, repair costs range from $10 to $8,000. DIY maintenance guides at au7o.io.

Frequently Asked Questions

What are the most common Honda Ridgeline problems?

According to Au7o's analysis of 580+ owner reports, the 2009 Honda Ridgeline has 12 documented issues. The most frequently reported are: VCM System - Excessive Oil Consumption and Misfires, Radiator Cross-Contamination (SMOD) - Catastrophic Transmission Failure, Spark Plugs Backing Out - Coil Pack Melting and Engine Damage. Of these, 6 are rated critical and should be addressed promptly.

Is the Honda Ridgeline reliable?

The 2009 Honda Ridgeline has 12 known issues documented across 580+ owner reports. 6 issues are rated critical: VCM System - Excessive Oil Consumption and Misfires and Radiator Cross-Contamination (SMOD) - Catastrophic Transmission Failure and Spark Plugs Backing Out - Coil Pack Melting and Engine Damage and Takata Airbag Inflator Rupture - Unrepaired First-Generation Trucks and Rear Frame and Subframe Corrosion - Fuel Tank Strap Mounts Rust Through (Recall 22V-430) and Hydraulic Timing Belt Tensioner Leaks Down - Belt Skip and Interference Engine Damage (J35A9). Prospective buyers should inspect for these issues and factor potential repair costs into their purchase decision. Regular maintenance following the manufacturer's schedule helps prevent many common problems.

How much does it cost to fix common Honda Ridgeline problems?

Repair costs for known Honda Ridgeline issues range from $0 to $8,000, depending on the specific problem and whether you choose DIY or professional repair. The most critical issue, VCM System - Excessive Oil Consumption and Misfires, typically costs $81-$8,000 to repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.

What is the 2006-2014 Honda Ridgeline VCM System - Excessive Oil Consumption and Misfires?

Variable Cylinder Management (VCM) deactivates 3 cylinders during light-load driving to improve fuel economy. When inactive cylinders reactivate, vacuum pulls oil past piston rings into the combustion chamber, causing excessive oil consumption (1 quart per 1,000-1,500 miles vs. n… Repairs typically run $81-$8,000. Severity: high.

All 12 Known Issues

Other Honda Models

Frequently Asked Questions

What are the most common Honda Ridgeline problems?

Is the Honda Ridgeline reliable?

How much does it cost to fix common Honda Ridgeline problems?

What is the 2006-2014 Honda Ridgeline VCM System - Excessive Oil Consumption and Misfires?

What is the 2006-2014 Honda Ridgeline Radiator Cross-Contamination (SMOD) - Catastrophic Transmission Failure?

When Issues Typically Appear

2006-2014 Honda Ridgeline: VCM System - Excessive Oil Consumption and Misfires#

2006-2010 Honda Ridgeline: Spark Plugs Backing Out - Coil Pack Melting and Engine Damage#

2006-2014 Honda Ridgeline: Hydraulic Timing Belt Tensioner Leaks Down - Belt Skip and Interference Engine Damage (J35A9)#

2006-2014 Honda Ridgeline: Rear Frame and Subframe Corrosion - Fuel Tank Strap Mounts Rust Through (Recall 22V-430)#

2006-2014 Honda Ridgeline: In-Bed Trunk Water Intrusion and Drainage Clogs#

2006-2023 Honda Ridgeline: Clogged Moonroof Drains and Roof-Seam Sealer Leaks - Wet Headliner and Overhead Console#

2006-2022 Honda Ridgeline: Dual-Action Tailgate Latch Actuator Failure and Linkage Misadjustment - Tailgate Won't Swing Open#

2006-2014 Honda Ridgeline: Radiator Cross-Contamination (SMOD) - Catastrophic Transmission Failure#

2006-2014 Honda Ridgeline: Rear Differential Noise and Shuddering (AWD Models)#

2006-2014 Honda Ridgeline: Takata Airbag Inflator Rupture - Unrepaired First-Generation Trucks#

2006-2020 Honda Ridgeline: Front Lower Control Arm Ball Joint Wear - Front-End Clunk Over Bumps#

2006-2014 Honda Ridgeline: Power Steering Pump Cold-Start Whine and Feed-Hose O-Ring Leak (TSB 07-86)#