P2671
Actuator Supply Voltage "B" Circuit High
- Severity
- High
- Driving
- Drive only to a garage
Actuator supply voltage "B" is reading high - the supply to a group of actuators is above where it should be, usually because it has been shorted to a higher voltage or has lost its earth reference. Actuators on that supply may operate when they should not.
Possible causes
- CommonSupply circuit shorted to battery voltage or another supply
- CommonChafed harness bridging the supply to a heavier circuit
- CommonCorrosion in a connector bridging adjacent pins
- PossibleOvercharging from a charging system fault
- PossibleFailed control module supply driver
What you might notice
- Several actuator codes at once
- Actuators operating when they should not
- Limp mode
- Check engine light on
What to check, in order
- Check charging voltage first. If the whole vehicle is being overcharged, this code is a symptom of that and the charging fault is the one to fix.
- Look for a short to a supply wire on the actuator supply circuit.
- Inspect connectors for corrosion bridging adjacent pins.
- Check the harness for chafe damage where the supply runs alongside heavier circuits.
- Fix the supply before diagnosing the actuator codes stored alongside.
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
Computer output circuits and control module
P2600P2601P2602P2603P2604P2605P2606P2607P2608P2609P2610P2611P2612P2613P2614P2615P2616P2617P2618P2619P2620P2621P2622P2623P2624P2625P2626P2627P2628P2629P2630P2631P2632P2633P2634P2635P2636P2637P2638P2639P2640P2641P2642P2643P2644P2645P2646P2647P2648P2649P2650P2651P2652P2653P2654P2655P2656P2657P2658P2659P2660P2661P2662P2663P2664P2665P2666P2667P2668P2669P2670P2671