P2260
Secondary Air Injection System Control 'B' Circuit High
Secondary air injection
Generic OBD-II
Medium
What it means
P2260 means the ECM saw higher-than-expected voltage on the 'B' control circuit for the secondary air injection system — the pump that blows fresh air into the exhaust after a cold start to cut emissions. It is usually a wiring, connector, or solenoid problem. The engine runs normally, but the car will not pass an emissions test until it is fixed.
Medium
Can I keep driving? Yes — the car runs and drives normally, but it will fail an emissions test and may hesitate slightly when cold until repaired.
Common symptoms
What you'll notice
- Check-engine light on
- Fails an emissions/readiness test
- Occasional hesitation on acceleration, mainly when cold
- No obvious drivability change in many cases
Common causes
Most likely first
- Open, shorted, or corroded wiring in the secondary-air control 'B' circuit reading high voltageLikely
- Faulty secondary-air control solenoid or its relayCommon
- Poor electrical connection at the pump, solenoid, or ECM connectorCommon
- Air control valve or check valve stuck or plugged with carbonLess often
- Failed engine control module (ECM) driver, least likelyLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data, then visually inspect the secondary-air control 'B' wiring and connectors for damage, corrosion, or looseness.
- Check the control solenoid and relay for correct resistance and power/ground.
- Test the circuit for an open or short to voltage with a meter against spec.
- Inspect the air valves and passages for carbon plugging.
- Repair the wiring or replace the failed solenoid/valve, then clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2260?+
Yes, in the short term — it does not affect normal running. It mainly means the secondary-air system that lowers cold-start emissions is not working, so you will fail an emissions test.
Can I just clear P2260?+
It will clear but return once the ECM re-tests the circuit, because this is an electrical fault, not a stored glitch.
Related codes
Often seen with P2260
Read & clear P2260 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX