P2738
Pressure Control Solenoid "F" Control Circuit Low
- Severity
- High
- Driving
- Drive only to a garage
The control circuit for pressure control solenoid "F" is reading low - typically shorted to earth or an open circuit. The module cannot drive the solenoid, so line pressure cannot be controlled.
Possible causes
- CommonDebris in the fluid jamming the solenoid
- CommonFailed 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
- Very harsh or violent shifts
- Slipping under load
- Transmission stuck in one gear
- Delayed engagement into drive or reverse
- Check engine light on
What to check, in order
- Disconnect at the case connector and check whether the low reading persists at the harness side. That establishes whether the fault is inside or outside the transmission.
- Read all transmission codes together. Several solenoid codes at once point at the case connector, the internal harness or contaminated fluid - not at several failed solenoids.
- Check the fluid level and condition first. It is the cheapest check and it explains more transmission complaints than every electrical fault combined.
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
P2700P2701P2702P2703P2704P2705P2706P2707P2708P2709P2710P2711P2712P2713P2714P2715P2716P2717P2718P2719P2720P2721P2722P2723P2724P2725P2726P2727P2728P2729P2730P2731P2732P2733P2734P2735P2736P2737P2738P2739P2740P2741P2742P2743P2744P2745P2746P2747P2748P2749P2750P2751P2752P2753P2754P2755P2756P2757P2758P2759P2760P2761P2762P2763P2764P2765P2766P2767P2768P2769P2770P2771P2772P2773P2774P2775P2776P2777P2778P2779P2780P2781P2782P2783P2784P2785P2786P2787P2788P2789P2790P2791P2792P2793P2794P2795