P2260: Secondary Air Injection System Control B Circuit High
What to do
The car drives normally, with cold-start emissions affected. If the switching valve is vacuum operated, ask for its hoses to be checked as well as the wiring — perished vacuum hose is common and invisible to an electrical test.
What this code means
The second secondary air control circuit reads above its valid range — an open circuit or a short to supply. On systems where this circuit drives a vacuum-operated switching valve rather than an electrical one, the vacuum lines deserve inspection alongside the wiring: perished hose produces a valve that does not operate for reasons no electrical test will find.
Likely causes
Start here
- Open circuit in valve wiring · moderate
- Faulty secondary air switching valve · moderate
- Disconnected or leaking vacuum hose · easy
Less common
- Corroded or loose connector · easy
- Blown fuse or failed supply · easy
Symptoms
Components involved
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
Be the first to write this up
Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.
What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
Sign in or create an account to add what you found about P2260.