P2260
Secondary Air Injection System Control "B" Circuit High
- Severity
- Medium
- Driving
- Drivable — book it in
Secondary air injection control circuit "B" is reading high - typically shorted to voltage, or a relay that will not release. This one matters more than the low variant, because a circuit stuck high can leave the pump running when it should have stopped. A pump designed to run for a minute at a time does not tolerate running continuously.
Possible causes
- CommonRelay contacts welded closed
- CommonWiring shorted to voltage
- CommonCorroded connector bridging pins
- PossibleChafed harness against a supply wire
- RareFailed control module driver
What you might notice
- Pump running continuously, or long after a cold start
- Loud buzzing from the engine bay that does not stop
- Check engine light on
- Battery draining
- Worse fuel economy
What to check, in order
- Listen for the pump. If it is still running once the engine is warm, remove the relay to stop it while you diagnose - a pump running continuously overheats and destroys itself.
- Check whether the high reading persists with the relay removed.
- Swap the relay. Welded contacts are the most common cause.
- Inspect the connector for corrosion bridging pins, and the harness for a chafe point against a supply wire.
- Check whether the fuel trims have shifted. Air pumped into the exhaust continuously makes the oxygen sensors read lean, so the module adds fuel it does not need.
Read this code from your own car
Plug an ELM327 adapter into the OBD-II port under the dashboard. Pin16 reads every stored, pending and permanent code, explains each one like this page does — offline, with no account — and shows what the car recorded when the fault was set.
Where this code sits
P00xxP01xxP02xxP03xxP04xxP05xxP06xxP07xxP08xxP09xxP0AxxP0BxxP0CxxP0DxxP0ExxP0FxxP10xxP11xxP12xxP13xxP14xxP15xxP16xxP17xxP18xxP19xxP1AxxP1BxxP1CxxP1DxxP1ExxP1FxxP20xxP21xxP22xxP23xxP24xxP25xxP26xxP27xxP28xxP29xxP2AxxP2BxxP2CxxP2DxxP2ExxP2FxxP30xxP31xxP32xxP33xxP34xxP35xxP36xxP37xxP38xxP39xxP3AxxP3BxxP3CxxP3DxxP3ExxP3Fxx
Fuel and air metering - injector circuits
P2200P2201P2202P2203P2204P2205P2206P2207P2208P2209P2210P2211P2212P2213P2214P2215P2216P2217P2218P2219P2220P2221P2222P2223P2224P2225P2226P2227P2228P2229P2230P2231P2232P2233P2234P2235P2236P2237P2238P2239P2240P2241P2242P2243P2244P2245P2246P2247P2248P2249P2250P2251P2252P2253P2254P2255P2256P2257P2258P2259P2260P2261P2262P2263P2264P2265P2266P2267P2268P2269P2270P2271P2272P2273P2274P2275P2276P2277P2278P2279P2280P2281P2282P2283P2284P2285P2286P2287P2288P2289P2290P2291P2292P2293P2294P2295P2296P2297P2298P2299