Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2001 Isuzu Trooper LS, RWDFACTORY OEM SERVICE PROCEDURE
Transmission Control System DTCS
TRANSMISSION CONTROL SYSTEM (4L30-E) DIAGNOSTIC TROUBLE CODE (DTC) LIST
| DTC | Description |
|---|---|
| P0218 | Transmission Fluid Over Temperature |
| P0705 | Transmission Range Switch (Mode Switch) Illegal Position |
| P0706 | Transmission Range Switch (Mode Switch) Performance |
| P0711 | Transmission Fluid Temperature (TFT) Sensor Performance |
| P0712 | Transmission Fluid Temperature Sensor Circuit Low Input (TFT) |
| P0713 | Transmission Fluid Temperature (TFT) Sensor Circuit High Input |
| P0719 | Brake Switch Circuit Low (Stuck ON) |
| P0722 | Automatic Transmission Output Speed Sensor (OSS) Low Input |
| P0723 | Automatic Transmission Output Speed Sensor (OSS) Intermittent |
| P0724 | Brake Switch Circuit High (Stuck OFF) |
| P0730 | Gear Error Without Input Speed |
| P0742 | Torque Converter Clutch (TCC) Circuit Stuck ON |
| P0748 | Pressure Control Solenoid (PCS) (FORCE MOTOR) Circuit Electrical |
| P0751 | Shift Solenoid A Performance (Stuck OFF) |
| P0752 | Shift Solenoid A Performance (Stuck ON) |
| P0753 | Shift Solenoid A Electrical |
| P0756 | Shift Solenoid B Performance (Stuck OFF) |
| P0757 | Shift Solenoid B Performance (Stuck ON) |
| P0758 | Shift Solenoid B Electrical |
| P1850 | Brake Band Apply Solenoid Malfunction |
| P1860 | TCC Solenoid Electrical |
| P1870 | Transmission Component Slipping |
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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