Suzuki FI Code C49: PAIR Control Solenoid — Fix
On Suzuki motorcycles and scooters, FI code C49 means a fault in the PAIR (pulsed secondary air injection) control solenoid circuit — an emissions device that adds air to the exhaust to burn off unburnt fuel.
- Applies to
- Suzuki motorcycles
- Est. repair cost
- $20 – $130
- Time to fix
- 30–90 minutes
What it means
Common causes are a loose/corroded connector, damaged wiring, or a failed PAIR solenoid. This is a generic Suzuki fuel-injection (FI) code, so it applies across Suzuki FI models — the Raider R150 Fi, Smash, Gixxer, GSX-R and GSX-S range, V-Strom, and more. Suzuki reports it as a "C" number, shown through the FI-light blink pattern or by entering the bike’s dealer/diagnostic mode. After the fault is repaired it becomes a stored "history" code; clear it through Suzuki’s dealer/diagnostic mode so the FI light goes out.
Symptoms
- FI light on with code C49
- Possible popping on deceleration
- Usually little effect on running
How to fix it
- 1
Inspect the connector and wiring
1. Locate the PAIR control solenoid. 2. Reseat the connector and check the harness.
- 2
Test and replace
1. Check the solenoid resistance/operation. 2. Replace if faulty, then clear the code.
Frequently asked questions
Is C49 serious?
Usually mild — PAIR is an emissions system, so the bike runs but may pop on deceleration. Worth fixing for emissions and to clear the light.
Last updated July 16, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.