2008 Lexus SC 430FACTORY OEM SERVICE PROCEDURE

Diagnostic Trouble Code Chart

HINT:

  • If a DTC is displayed during the DTC check, check the parts listed in the table below .
  • *1: "Comes on" means the Malfunction Indicator Lamp (MIL) illuminates.
  • *2: "DTC stored" means the ECM memorizes the malfunction code if the ECM detects the DTC detection condition.
  • These DTCs may be output when the clutch, brake, gear components, etc., inside the automatic transmission are damaged.

    Automatic transmission system: 

    DIAGNOSTIC TROUBLE CODE CHART

    DTC Code Detection Item Trouble Area MIL*1 Memory*2
    P0705  Transmission Range Sensor Circuit Malfunction (PRNDL Input)
    • Open or short in park/neutral position switch circuit
    • Park/neutral position switch
    • ECM
    Comes on DTC stored
    P0710  Transmission Fluid Temperature Sensor "A" Circuit
    • Open or short in ATF temperature sensor circuit
    • Transmission wire (ATF temperature sensor)
    • ECM
    Comes on DTC stored
    P0711  Transmission Fluid Temperature Sensor "A" Performance Transmission wire (ATF temperature sensor) Comes on DTC stored
    P0712  Transmission Fluid Temperature Sensor "A" Circuit Low Input
    • Short in ATF temperature sensor circuit
    • Transmission wire (ATF temperature sensor)
    • ECM
    Comes on DTC stored
    P0713  Transmission Fluid Temperature Sensor "A" Circuit High Input
    • Open in ATF temperature sensor circuit
    • Transmission wire (ATF temperature sensor)
    • ECM
    Comes on DTC stored
    P0717  Turbine Speed Sensor Circuit No Signal
    • Open or short in speed sensor NT circuit
    • Speed sensor NT
    • ECM
    • Automatic transmission (clutch, brake, gear, etc.)
    Comes on DTC stored
    P0724  Brake Switch "B" Circuit High
    • Short in stop light switch signal circuit
    • Stop light switch
    • ECM
    Comes on DTC stored
    P0729  Gear 6 Incorrect Ratio
    • Valve body is blocked up or stuck (sequence valve)
    • Shift solenoid valve SLT remains open or closed
    • Automatic transmission (clutch, brake, gear, etc.)
    Comes on DTC stored
    P0748  Pressure Control Solenoid "A" Electrical (Shift Solenoid Valve SL1)
    • Open or short in shift solenoid valve SL1 circuit
    • Shift solenoid valve SL1
    • ECM
    Comes on DTC stored
    P0751  Shift Solenoid "A" Performance (Shift Solenoid Valve S1)
    • Shift solenoid valve S1 remains open or closed
    • Shift solenoid valve SLT remains open or closed
    • Valve body is blocked
    • No. 2 brake malfunction (Driving is difficult.)
    • Automatic transmission (clutch, brake, gear, etc.)
    Comes on DTC stored
    P0756  Shift Solenoid "B" Performance (Shift Solenoid Valve S2)
    • Shift solenoid valve S2 remains open or closed
    • Valve body is blocked
    • Automatic transmission (clutch, brake, gear, etc.)
    Comes on DTC stored
    P0761  Shift Solenoid "C" Performance (Shift Solenoid Valve S3)
    • Shift solenoid valve S3 remains open or closed
    • Shift solenoid valve SLT remains open or closed
    • Valve body is blocked
    • Automatic transmission (clutch, brake, gear, etc.)
    Comes on DTC stored
    P0766  Shift Solenoid "D" Performance (Shift Solenoid Valve S4)
    • Shift solenoid valve S4 remains closed
    • Shift solenoid valve SLT remains open or closed
    • Valve body is blocked (Brake control valve)
    • Automatic transmission (clutch, brake, gear, etc.)
    Comes on DTC stored
    P0776  Pressure Control Solenoid "B" Performance (Shift Solenoid Valve SL2)
    • Shift solenoid valve SL2 remains open
    • Shift solenoid valve SLT remains open or closed
    • Valve body is blocked (Brake control valve)
    • Automatic transmission (clutch, brake, gear, etc.)
    Comes on DTC stored
    P0778  Pressure Control Solenoid "B" Electrical (Shift Solenoid Valve SL2)
    • Open or short in shift solenoid valve SL2 circuit
    • Shift solenoid valve SL2
    • ECM
    Comes on DTC stored
    P0781  1-2 Shift (1-2 Shift Valve)
    • Valve body is blocked up or stuck (1-2 shift valve)
    • Shift solenoid valve SLT remains open or closed
    • Automatic transmission (clutch, brake, gear, etc.)
    Comes on DTC stored
    P0850  Park / Neutral Switch Input Circuit
    • Short in park/neutral position switch circuit
    • Park/neutral position switch
    • ECM
    Comes on DTC stored
    P0894  Transmission Component Slipping
    • Shift solenoid valve SLT remains open or closed
    • Shift solenoid valve S1, S2, S3, S4 or SL2 remains open or closed
    • Gear 6 ratio (sequence valve) is incorrect or 1-2 shift valve is stuck
    • Valve body is blocked
    • Automatic transmission (clutch, brake, gear, etc.)
    Comes on DTC stored
    P0973  Shift Solenoid "A" Control Circuit Low (Shift Solenoid Valve S1)
    • Short in shift solenoid valve S1 circuit
    • Shift solenoid valve S1
    • ECM
    Comes on DTC stored
    P0974  Shift Solenoid "A" Control Circuit High (Shift Solenoid Valve S1)
    • Open in shift solenoid valve S1 circuit
    • Shift solenoid valve S1
    • ECM
    Comes on DTC stored
    P0976  Shift Solenoid "B" Control Circuit Low (Shift Solenoid Valve S2)
    • Short in shift solenoid valve S2 circuit
    • Shift solenoid valve S2
    • ECM
    Comes on DTC stored
    P0977  Shift Solenoid "B" Control Circuit High (Shift Solenoid Valve S2)
    • Open in shift solenoid valve S2 circuit
    • Shift solenoid valve S2
    • ECM
    Comes on DTC stored
    P0979  Shift Solenoid "C" Control Circuit Low (Shift Solenoid Valve S3)
    • Short in shift solenoid valve S3 circuit
    • Shift solenoid valve S3
    • ECM
    Comes on DTC stored
    P0980  Shift Solenoid "C" Control Circuit High (Shift Solenoid Valve S3)
    • Open in shift solenoid valve S3 circuit
    • Shift solenoid valve S3
    • ECM
    Comes on DTC stored
    P0982  Shift Solenoid "D" Control Circuit Low (Shift Solenoid Valve S4)
    • Short in shift solenoid valve S4 circuit
    • Shift solenoid valve S4
    • ECM
    Comes on DTC stored
    P0983  Shift Solenoid "D" Control Circuit High (Shift Solenoid Valve S4)
    • Open in shift solenoid valve S4 circuit
    • Shift solenoid valve S4
    • ECM
    Comes on DTC stored
    P0985  Shift Solenoid "E" Control Circuit Low (Shift Solenoid Valve SR)
    • Short in shift solenoid valve SR circuit
    • Shift solenoid valve SR
    • ECM
    Comes on DTC stored
    P0986  Shift Solenoid "E" Control Circuit High (Shift Solenoid Valve SR)
    • Open in shift solenoid valve SR circuit
    • Shift solenoid valve SR
    • ECM
    Comes on DTC stored
    P2714  Pressure Control Solenoid "D" Performance (Shift Solenoid Valve SLT)
    • Shift solenoid valve SLT remains open or closed
    • Shift solenoid valve S1, S2, S3, S4 or SL2 remains open or closed
    • Gear 6 ratio (sequence valve) is incorrect or 1-2 shift valve is stuck
    • Valve body is blocked
    • Automatic transmission (clutch, brake, gear, etc.)
    Comes on DTC stored
    P2716  Pressure Control Solenoid "D" Electrical (Shift Solenoid Valve SLT)
    • Open or short in shift solenoid valve SLT circuit
    • Shift solenoid valve SLT
    • ECM
    Comes on DTC stored
    P2757  Torque Converter Clutch Pressure Control Solenoid Performance (Shift Solenoid Valve SLU)
    • Shift solenoid valve SLU remains open or closed
    • Valve body is blocked
    • Torque converter clutch
    • Automatic transmission (clutch, brake, gear, etc.)
    • Line pressure is too low
    Comes on DTC stored
    P2759  Torque Converter Clutch Pressure Control Solenoid Control Circuit Electrical (Shift Solenoid Valve SLU)
    • Open or short in shift solenoid valve SLU circuit
    • Shift solenoid valve SLU
    • ECM
    Comes on DTC stored
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

Rather have a pro handle this?

A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.

Comes to youSame-day available12-month warranty
Get a Free Quote

No obligation. See pricing before you book.