OBD-II Generic Error Code P2260: How to Fix It

Medium 1-3 hours Medium Severity Verified June 2026
Error Code
P2260
Brand
OBD-II Generic
Product Type
automotive
Severity
Medium
DIY Difficulty
Medium
Estimated Fix Time
1-3 hours
The P2260 error code means your vehicle's onboard computer has detected a low voltage or electrical fault in the secondary air injection (SAI) switch valve circuit B. The secondary air injection system pumps fresh air into the exhaust stream during cold starts to reduce harmful emissions and help the catalytic converter warm up faster. When P2260 is set, it typically means there is a wiring issue, a failed solenoid valve, or a faulty control module preventing the system from operating correctly.
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Tools You'll Need

How to Fix Error Code P2260

  1. Scan and Record All Fault Codes

    Keep the vehicle parked in a well-ventilated area while running diagnostics. Never diagnose under the vehicle while the engine is running.
  2. Inspect the SAI Switch Valve B Wiring and Connectors

    Always turn the ignition OFF and disconnect the negative battery terminal before handling electrical connectors or wiring near hot exhaust components.
  3. Test the SAI Switch Valve B Solenoid

  4. Check Voltage Supply to the Valve

    Be careful when probing live circuits. Avoid accidentally shorting positive and ground wires with your test probe.
  5. Inspect the Secondary Air Injection Pump and Hoses

    Do not reach near belts, pulleys, or the air injection pump while the engine is running.
  6. Replace the SAI Switch Valve B if Faulty

    Allow the exhaust system to cool completely before working near it. SAI switch valves are often mounted close to hot exhaust manifolds.
  7. Verify the Repair and Confirm Code Does Not Return

Parts You May Need

Secondary air injection switch valve (solenoid valve B)
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Secondary air injection pump
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SAI circuit fuse
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Wiring repair kit (wire, connectors, heat shrink)
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Secondary air injection check valve
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Secondary air injection switch valve (solenoid valve B)
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Secondary air injection pump
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SAI circuit fuse
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Wiring repair kit (wire, connectors, heat shrink)
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Secondary air injection check valve
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Secondary air injection switch valve (solenoid valve B)
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Secondary air injection pump
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SAI circuit fuse
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Wiring repair kit (wire, connectors, heat shrink)
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Secondary air injection check valve
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Secondary air injection switch valve (solenoid valve B)
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Secondary air injection pump
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SAI circuit fuse
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Wiring repair kit (wire, connectors, heat shrink)
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Secondary air injection check valve
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When to Call a Professional

You should take your vehicle to a qualified mechanic or automotive electrician if: the wiring harness shows extensive damage requiring professional repair; fuses continue to blow after replacement, indicating a persistent short circuit; the SAI pump, PCM, or multiple components appear to be faulty at the same time; or you are not comfortable working with automotive electrical systems and live circuits. If the code returns after replacing the switch valve and repairing visible wiring, a professional with advanced diagnostic equipment can perform a pinpoint electrical test of the PCM output driver circuit, which is beyond typical DIY capability.

Frequently Asked Questions

Can I drive my car with a P2260 code?
Yes, you can usually drive short distances with a P2260 code since it is rated as medium severity and the secondary air injection system mainly affects cold-start emissions rather than engine performance. However, your check engine light will remain on, and your vehicle may fail an emissions inspection. Leaving it unaddressed can eventually stress related components like the catalytic converter, so it is best to diagnose and repair it promptly.
What is the most common cause of a P2260 code?
The most common causes are a faulty secondary air injection switch valve solenoid (open or short circuit inside the coil), corroded or damaged wiring at the valve connector, or a blown fuse in the SAI circuit. Less commonly, a failed SAI air pump or a fault in the powertrain control module (PCM) output driver can also trigger P2260.
How much does it cost to fix a P2260 code?
If the fix is simply a blown fuse or a wiring repair, the cost can be under $50 in parts. Replacing the secondary air injection switch valve typically costs between $80 and $250 for the part depending on your vehicle, plus 1-2 hours of labor at a shop ($90-$180/hour). If the SAI pump also needs replacement, total costs can range from $300 to $700 or more. DIY repairs save significantly on labor costs.
Will a P2260 code clear itself?
No, P2260 will not clear itself unless the underlying fault is repaired and the vehicle completes enough drive cycles without detecting the problem again. You will need an OBD2 scanner to manually clear the code after making repairs. If the code keeps coming back after clearing, the fault has not been fully resolved.
Is P2260 the same as P2258 or P2259?
They are related but different. P2258 refers to the secondary air injection switch valve B circuit low (the broader circuit fault), P2259 refers to a high circuit condition, and P2260 is specifically the secondary air injection switch valve B low signal — meaning the PCM is seeing a low voltage or low signal on that specific valve's circuit. All three point to the same valve circuit and are diagnosed in a similar way, but your scanner's freeze frame data and wiring diagrams will help pinpoint the exact fault.