Honda Pilot Check Engine Light: Causes, Codes & Fixes

A flashing light on the Pilot's V6 (you may feel a shudder) is an active misfire that can damage the catalytic converter. Stop safely and get it checked.

A check engine light on a Honda Pilot can point to anything from a loose gas cap to a misfire on its V6 engine. It shares its list of possible faults with other V6 Hondas. See the main Honda check engine light guide for the fundamentals.

Steady light vs flashing light

Steady light: a stored fault. Honda says to avoid high speeds and have the vehicle inspected immediately.
Flashing light: an active misfire — on the V6 you may feel a shudder. Stop safely and get it checked (full detail: flashing check engine light).

What causes the check engine light on a Pilot

Loose or failed gas cap — the simplest thing to rule out.
Ignition misfire (plugs & coils) — on the V6, including the rear bank; a misfire is what makes the light flash. See P0300.
VCM (Variable Cylinder Management) — cylinder deactivation contributes to oil consumption, plug fouling, and misfire codes over time.
Oxygen (O2) sensor — a worn sensor on a higher-mileage Pilot hurts economy and sets a code.
Catalytic converter — an ignored misfire can damage it, and the fault shows up as P0420 or P0430.
EVAP leaks — a failed purge valve or cracked vapor line (for example P1457).

To see how the Pilot compares with other Hondas, read the NHTSA complaint data by model.

Honda Pilot trouble codes

P0300 / P0301–P0306 — Random or per-cylinder misfire (the V6 has six).
P0420 / P0430 — Catalyst efficiency below threshold, bank 1 or bank 2.
P0171 / P0174 — System too lean on bank 1 or bank 2.
P1457 — EVAP leak on the canister side.
P3400 — Cylinder deactivation (VCM) system fault.

The VSA light connection

The Pilot can show the check engine light alongside the VSA light because the systems share sensors. Fix the engine code first; the VSA light can clear with it. For Pilot-specific details, including how to tell VSA apart from the VTM-4 AWD light, plus reset steps, see the Honda Pilot VSA light guide.

What to do

Check steady vs flashing. A flashing light, shudder, power loss, or overheating means stop and get it checked or towed.
Read the code (at a parts store, or with your own scanner) so you know which bank and system is at fault on the V6.
Fix the cause, then clear it. After the repair, the light can go out on its own over a few drive cycles, or you can clear it with the scanner.

Resetting the light without fixing the cause just brings it back at the next drive cycle.

FAQ

Why is the check engine light on in my Honda Pilot?

Possible causes include a loose gas cap, an ignition misfire (including the rear bank), VCM-related spark plug fouling, a worn oxygen sensor, the catalytic converter, or an EVAP leak. Read the code to pinpoint the system.

What is VCM on a Honda Pilot and does it cause problems?

VCM (Variable Cylinder Management) deactivates cylinders to save fuel. Over time it can contribute to oil consumption, spark plug fouling, and misfire codes.

What is the difference between P0420 and P0430 on a Pilot?

They are the same catalyst-efficiency fault on different banks of the V6. P0420 is bank 1 and P0430 is bank 2.

Can I drive my Honda Pilot with the check engine light on?

If the light is steady, Honda says to avoid high speeds and have the vehicle inspected immediately. If it's flashing, or the SUV shudders or loses power, stop as soon as it's safe — a flashing light is an active V6 misfire that can damage the catalytic converter.