Honda PGM-FI Code 11: VS Sensor — Causes & Fix
On Honda motorcycles and scooters, PGM-FI code 11 means the ECM has detected a fault in the VS (vehicle speed) sensor circuit — the sensor that reports road speed to the ECM and speedometer.
- Applies to
- Honda motorcycles
- Est. repair cost
- $20 – $120
- Time to fix
- 30–90 minutes
What it means
Usual causes are a loose/corroded speed-sensor connector, damaged wiring, debris on the sensor tip, or a failed VS sensor. This is a generic Honda PGM-FI (Programmed Fuel Injection) code, so it applies across Honda FI models — scooters and underbones like the Click, Vario, BeAT, PCX, ADV, and Wave, as well as CB/CBR motorcycles. Honda shows it by blinking the FI/MIL warning light: a long blink counts as ten and a short blink counts as one (e.g. one long + two short = code 12). Clearing the code usually needs Honda’s service-check reset procedure (jumping the DLC service connector, or a scan tool) after the fault is fixed; simply resetting without repair will let the light return.
Symptoms
- FI/MIL light on with code 11
- Speedometer reads erratically or stays at zero
- Odometer/trip not counting
- Possible minor fueling or rev-limit effects
How to fix it
- 1
Inspect the speed sensor and connector
1. Locate the VS sensor (usually at the gearbox/final drive). 2. Reseat the connector; clean any metal debris from the sensor tip.
- 2
Check wiring and signal
1. Inspect the harness for damage. 2. Confirm the sensor produces a pulsing signal as the wheel turns; replace if dead. 3. Clear the code after repair.
Frequently asked questions
Why is my speedometer dead with code 11?
The same sensor feeds both the ECM and the speedometer, so a circuit fault often knocks out the speed reading too.
Last updated July 15, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.