2018 Honda Odyssey · symptom sheet

Multiple warning lights come on at once

33owner reports
60,000median miles
$1,700median quote
0involved a crash

Newest report Aug 31, 2026 · checked Sep 9, 2026

361 of the 977 complaints on this car are about the electrical system. 33 of those describe warning lights.

Tick what matches of 33 reports

every light on the dash at once

the car went into limp mode

it happened while driving

cleared after restart

the dealer found a module fault

What got replaced

Owners who name the part that was replaced mention the battery (8 reports), the module (4 reports) and the sensor (3 reports).

Recalls and investigations

One recall on the electrical system covers the 2018 model year. A recall on the same system isn't always the same failure, so read the defect text.

20V-066Feb 6, 2020

Electrical System:Wiring

Honda (American Honda Motor Co.) is recalling certain 2018-2020 Odyssey vehicles. The wire harness for the third row seat accessory power outlet may get pinched between the unibody and rear trim panel, possibly damaging the wires and causing an electrical short.

Risk and remedy

Risk: An intermittent electrical short could overheat the wire harness, increasing the risk of a fire.
Remedy: Honda will notify owners, and dealers will inspect the third row seat accessory power outlet wire harness for damage, replacing it as necessary. If no damage is found, the dealer will apply protective tape and re-route the harness. All repairs will be performed free of charge. The recall began March 16, 2020. Owners may contact Honda customer service at 1-888-234-2138. Honda's number for this recall is T6U.

NHTSA investigations into the electrical system on the Odyssey

PE12-026opened Oct 2, 2012

Electrical · model years 2003 to 2004

Ignition interlock failure - rollaway. Closed jan 14, 2013, led to recall 12V-573.

NHTSA summary

On December 10, 2012, Honda Motor Company submitted a defect information report to NHTSA regarding ignition interlocks in approximately 576,117 model year MY) 2003 through 2004 Honda Pilot and Odyssey vehicles that are the subject of this investigation and 231,044 MY 2003 through 2006 Acura MDX vehicles (Recall No. 12V-573).Honda's report states that a design change to the ignition switch used in the recalled vehicles reduced the range of rotation for the ignition switch from 160 degrees in earlier designs to 125 degrees without a corresponding change to the ignition interlock blocking mechanism.The result was that excessive rotational force could damage a lever that would allow the driver to remove the ignition key that was in a position other than the Park position, which may allow the vehicle to roll away.ODI identified 176 complaints related to the alleged defect, including 48 roll away crashes.Threeof the incidents resulted in the following injuries to pedestrians:1) a broken foot and torn Achilles tendon; 2) a fractured fibula and crush injuries to a shin area; and 3) an incident requiring unspecified treatment at a hospital emergency room.This investigation is closed.The VOQs associated with this investigation are: 10486515, 10486393, 10486100, 10485010, 10482229, 10482091, 10481169, 10481105, 10481079, 10481027, 10480804, 10480648, 10480099, 10480009, 10479934, 10479695, 10479561, 10479517, 10479494, 10479484, 10479437, 10479421, 10479409, 10479343, 10478916, 10478876

None of these investigations covers the 2018 model year.

What owners paid

8 of the 33 reports quote a price. Each dot is one quote. The middle half runs $279 to $2,000.

$279$1,700$2,000

$0k$2k$4k$6k$8k

When it happens

The middle half of failures fell between 34,572 and 83,000 miles, from the 11 reports that gave a mileage.

318

321

222

423

724

625

826

What owners wrote

“The windshield-mounted front monocular camera (Honda Sensing unit) overheated and failed/burnt out. This failure completely disabled the Forward Collision Warning, Automatic Emergency Braking, Lane Departure Warning, Lane Keeping Assist, and Adaptive Cruise Control systems, triggering multiple safety system warning lights on the dashboard.”
Filed Aug 31, 2026

“The front facing camera has stopped working. Anytime we turn the vehicle on we get multiple warning lights (lane assist, cruise control, bright lights, braking, etc) aren't working.”
Filed Feb 6, 2026

“The Foward Looking Camera is failing and causing all the ADAS not to work and has all the lights on the dash. The code comes back as U3000-49 which is a multi purpose camera failure.”
Filed Sep 6, 2025

“Front camera failure causes multiple safety issues. Lane keep assist collision mitigation road departure mitigation high beam problem This is a known issue and the dealership knew about this immediately hearing the multiple warning signs. Cost of replacement is over $2000.”
Filed Jul 12, 2025

Should you keep driving it?

This page can't tell you that. 0 of 33 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.

File your own report with NHTSA. Complaint counts are how a problem gets an investigation.