P0770
Shift Solenoid "E"
- Severity
- High
- Driving
- Drive only to a garage
A fault in shift solenoid "E". Shift solenoids are the valves that route hydraulic pressure to the clutches that make each gear. When one is faulty, the gears that depend on it become unavailable, so the transmission will typically hold a single gear and refuse to shift.
Possible causes
- CommonFailed shift solenoid
- CommonDebris from internal wear jamming the solenoid
- CommonCorroded transmission case connector, or fluid wicking into it
- CommonLow or degraded fluid
- PossibleInternal transmission harness failure
- PossibleSticking valve in the valve body bore
What you might notice
- Transmission stuck in one gear
- Missing gears - it skips one, or will not go above a certain gear
- Harsh or delayed shifts
- Poor fuel economy from running at high revs
- Check engine light on
What to check, in order
- Check the fluid level and condition first.
- Note which gears you can and cannot reach. The pattern of missing gears tells a transmission specialist a great deal and costs nothing to observe.
- Read all transmission codes. Several solenoid codes at once point at the case connector, the internal harness or contaminated fluid.
- Inspect the case connector for fluid ingress and corroded pins.
- Measure the solenoid winding resistance against specification where it can be reached.
- On many transmissions the solenoids sit in a valve body or mechatronic unit and are not supplied separately. Establish what the actual repair is before budgeting for it.
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
Transmission
P0700P0701P0702P0703P0704P0705P0706P0707P0708P0709P0710P0711P0712P0713P0714P0715P0716P0717P0718P0719P0720P0721P0722P0723P0724P0725P0726P0727P0728P0729P0730P0731P0732P0733P0734P0735P0736P0737P0738P0739P0740P0741P0742P0743P0744P0745P0746P0747P0748P0749P0750P0751P0752P0753P0754P0755P0756P0757P0758P0759P0760P0761P0762P0763P0764P0765P0766P0767P0768P0769P0770P0771P0772P0773P0774P0775P0776P0777P0778P0779P0780P0781P0782P0783P0784P0785P0786P0787P0788P0789P0790P0791P0792P0793P0794P0795P0796P0797P0798P0799