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.
2006 Lexus LS 430FACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Chart
DTC REFERENCE LIST
| DTC | Description |
|---|---|
| DTC P0230 | FUEL PUMP PRIMARY CIRCUIT |
| DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 | RANDOM/MULTIPLE CYLINDER MISFIRE DETECTED, CYLINDER 1/2/3/4/5/6/7/8 MISFIRE DETECTED |
| DTC P0325, P0327, P0328, P0330, P0332, P0333 | KNOCK SENSOR 1 CIRCUIT (BANK 1 OR SINGLE SENSOR), KNOCK SENSOR 1 CIRCUIT LOW/HIGH INPUT (BANK 1 OR SINGLE SENSOR), KNOCK SENSOR 2 CIRCUIT (BANK 2), KNOCK SENSOR 2 CIRCUIT LOW/HIGH INPUT (BANK 2) |
| DTC P0335, P0339 | CRANKSHAFT POSITION SENSOR "A" CIRCUIT, CRANKSHAFT POSITION SENSOR "A" CIRCUIT INTERMITTENT |
| DTC P0340: P0341, P0345, P0346: CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 1 OR SINGLE SENSOR), CAMSHAFT POSITION SENSOR "A" CIRCUIT RANGE/PERFORMANCE (BANK 1 OR SINGLE SENSOR), CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 2), CAMSHAFT POSITION SENSOR "A" CIRCUIT RANGE/PERFORMANCE (BANK 2) | P0341, P0345, P0346: CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 1 OR SINGLE SENSOR), CAMSHAFT POSITION SENSOR "A" CIRCUIT RANGE/PERFORMANCE (BANK 1 OR SINGLE SENSOR), CAMSHAFT POSITION SENSOR "A" CIRCUIT (BANK 2), CAMSHAFT POSITION SENSOR "A" CIRCUIT RANGE/PERFORMANCE (BANK 2) |
| DTC P0351, P0352, P0353, P0354, P0355, P0356, P0357, P0358 | IGNITION COIL "A"/"B"/"C"/"D"/"E"/"F"/"G"/"H" PRIMARY/SECONDARY CIRCUIT |
| DTC P0420, P0430 | CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD (BANK 1)/(BANK 2) |
| DTC P043E, P043F | EVAPORATIVE EMISSION SYSTEM LEAK DETECTION REFERENCE ORIFICE LOW FLOW; EVAPORATIVE EMISSION SYSTEM REFERENCE ORIFICE HIGH FLOW |
| DTC P0441 | EVAPORATIVE EMISSION CONTROL SYSTEM INCORRECT PURGE FLOW |
| DTC P0450, DTC P0451, DTC P0452, DTC P0453 | EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR MALFUNCTION; EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR RANGE/PERFORMANCE; EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR/SWITCH LOW INPUT; EVAPORATIVE EMISSION CONTROL SYSTEM PRESSURE SENSOR/SWITCH HIGH INPUT |
| DTC P0455, DTC P0456 | EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (GROSS LEAK); EVAPORATIVE EMISSION CONTROL SYSTEM LEAK DETECTED (VERY SMALL LEAK) |
| DTC P0500, P0503 | VEHICLE SPEED SENSOR "A", VEHICLE SPEED SENSOR "A" INTERMITTENT/ERRATIC/HIGH |
| DTC P0504, P0571 | BRAKE SWITCH "A"/"B" CORRELATION, BRAKE SWITCH "A" CIRCUIT |
| DTC P0505 | IDLE AIR CONTROL SYSTEM |
| DTC P0560 | SYSTEM VOLTAGE |
| DTC P0604, P0606, P0607, P0657 | INTERNAL CONTROL MODULE RANDOM ACCESS MEMORY (RAM) ERROR, ECM/PCM PROCESSOR, CONTROL MODULE PERFORMANCE, ACTUATOR SUPPLY VOLTAGE CIRCUIT/OPEN |
| DTC P0617 | STARTER RELAY CIRCUIT HIGH |
| DTC P0630 | VIN NOT PROGRAMMED OR MISMATCH - ECM/PCM |
| DTC P1340, P1341 | CAMSHAFT POSITION SENSOR "A" (BANK 1 SENSOR 2) |
| DTC P2102, P2103 | THROTTLE ACTUATOR CONTROL MOTOR CIRCUIT LOW/HIGH |
| DTC P2111, P2112 | THROTTLE ACTUATOR CONTROL SYSTEM - STUCK OPEN/CLOSED |
| DTC P2118 | THROTTLE ACTUATOR CONTROL MOTOR CURRENT RANGE/PERFORMANCE |
| DTC P2119 | THROTTLE ACTUATOR CONTROL THROTTLE BODY RANGE/PERFORMANCE |
| DTC P2120, P2122, P2123, P2125, P2127, P2128, P2138 | THROTTLE/PEDAL POSITION SENSOR/SWITCH "D" CIRCUIT, THROTTLE/PEDAL POSITION SENSOR/SWITCH "D" CIRCUIT LOW/HIGH INPUT, THROTTLE/PEDAL POSITION SENSOR/SWITCH "E" CIRCUIT, DTC THROTTLE/PEDAL POSITION SENSOR/SWITCH "E" CIRCUIT LOW/HIGH INPUT, THROTTLE/PEDAL POSITION SENSOR/SWITCH "D"/"E" VOLTAGE CORRELATION |
| DTC P2121 | THROTTLE/PEDAL POSITION SENSOR/SWITCH "D" CIRCUIT RANGE/PERFORMANCE |
| DTC U0001 | HIGH SPEED CAN COMMUNICATION CIRCUIT |
HINT:
Parameters listed in the chart may not be exactly the same as your readings due to the type of instrument or other factors.
If a Diagnostic Trouble Code (DTC) is displayed, check the trouble area for the DTC listed in the tables below.
Factory Service Tools
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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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