Kawasaki DFI Code 67: Oxygen Sensor Heater — Fix
On Kawasaki motorcycles and scooters, DFI service code 67 means a fault in the oxygen sensor heater circuit — the heater that brings the O2 sensor up to operating temperature quickly.
- Applies to
- Kawasaki motorcycles
- Est. repair cost
- $25 – $160
- Time to fix
- 30–90 minutes
What it means
Common causes are a loose/corroded connector, damaged wiring, or a failed heater element inside the O2 sensor. This is a Kawasaki DFI (Digital Fuel Injection) service code, read through the FI light or the bike’s service/diagnostic mode. It applies to Kawasaki FI models such as the Ninja, Z, Versys, and ZX range. Note: Kawasaki service-code numbers can vary by model and year, so always confirm against your model’s service manual. After the fault is repaired the code is kept as a stored "history" code; clear it through Kawasaki’s service/diagnostic mode so the FI light goes out.
Symptoms
- FI light on with service code 67
- Slower closed-loop fuelling when cold
- Slightly worse cold-running economy
How to fix it
- 1
Inspect the connector and wiring
1. Locate the O2 sensor in the exhaust header. 2. Reseat the connector and check the harness.
- 2
Test and replace
1. Check the heater circuit resistance. 2. Replace the O2 sensor if the heater is open, then clear the code.
Frequently asked questions
Is code 67 the same as a bad O2 sensor?
It’s specifically the sensor’s built-in heater circuit. The sensor still reads once warm, but the heater fault delays closed-loop; replacing the O2 sensor fixes it.
Last updated July 16, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.