| CAUTION | If ECM replacement is instructed in following testing, always ensure ECM harness connector and ground circuit are okay. If either are suspect, repair and repeat testing to confirm ECM malfunction. |
Home/Lexus/LS/Lexus LS II (1994-2000)/Repair manual/Testing & Diagnostics/DTC P0121: THROTTLE POSITION (TP) SENSOR CIRCUIT RANGE/PERF…
Contents
Wiring diagrams Section: Testing & Diagnostics- Engine Controls - Tests W/codes: Overview
- Engine Controls - Tests W/codes: Diagnosis
- Engine Controls - Tests W/codes: Component Locations
- Engine Controls - Tests W/codes: Other
- DTC P0100: MASS AIRFLOW (MAF) SENSOR CIRCUIT
- DTC P0110: INTAKE AIR TEMPERATURE (IAT) SENSOR CIRCUIT
- DTC P0115: ENGINE COOLANT TEMPERATURE (ECT) SENSOR CIRCUIT
- DTC P0120: THROTTLE POSITION (TP) SENSOR CIRCUIT MALFUNCTION
- DTC P0121: THROTTLE POSITION (TP) SENSOR CIRCUIT RANGE/PERFORMANCE PROBLEM
- DTC P0125: INSUFFICIENT COOLANT TEMPERATURE FOR CLOSED LOOP FUEL CONTROL
- DTC P0130 & P0150 - HEATED OXYGEN SENSOR FAULT
- DTC P0133 & P0153: HEATED OXYGEN SENSOR
- DTC P0135, P0141, P0155 & P0161: HEATED OXYGEN SENSOR CIRCUIT
- DTC P0136 & P0156: HEATED OXYGEN SENSOR CIRCUIT
- DTC P0171 & P0172: SYSTEM TOO LEAN OR RICH (FUEL TRIM)
- DTC P0325 & P0330: KNOCK SENSOR CIRCUIT
- DTC P0335 OR P1335: CRANKSHAFT POSITION (CKP) SENSOR "A" CIRCUIT
- DTC P0340: CAMSHAFT POSITION (CMP) SENSOR CKT MALFUNCTION
- DTC P0401: INSUFFICIENT EXHAUST GAS RECIRCULATION (EGR) FLOW DETECTED
- DTC P0402: EXCESSIVE EGR FLOW DETECTED
- DTC P0403: EGR CIRCUIT MALFUNCTION
- DTC P0420 OR P0430: CATALYST SYSTEM EFFICIENCY BELOW THRESHOLD
- DTC P0440: EVAP SYSTEM MALFUNCTION
- DTC P0441 & P0446: EVAP SYSTEM MALFUNCTION
- DTC P0450: EVAP PRESSURE SENSOR MALFUNCTION
- DTC P0500: VEHICLE SPEED SENSOR (VSS) MALFUNCTION
- DTC P0505: IDLE CONTROL SYSTEM MALFUNCTION
- DTC P0510: CLOSED THROTTLE POSITION (CTP) SWITCH MALFUNCTION
- DTC P1100: BAROMETRIC PRESSURE (BARO) SENSOR CKT MALFUNCTION
- DTC P1200: FUEL PUMP RELAY CIRCUIT MALFUNCTION
- DTC P1300 OR P1305: IGNITOR CIRCUIT MALFUNCTION
- DTC P1400: SUB-THROTTLE POSITION (SUB-TP) SENSOR MALFUNCTION
- DTC P1401: SUB-THROTTLE POSITION (SUB-TP) SENSOR CIRCUIT RANGE/PERFORMANCE PROBLEM
- DTC P1520: STOPLIGHT SWITCH SIGNAL MALFUNCTION
- DTC P1600: ECM BATT MALFUNCTION
- Engine Controls - Tests W/o Codes: Overview
- Engine Controls - Tests W/o Codes: Diagnosis
- Engine Controls - Tests W/o Codes: Other
- Engine Controls - System/component Tests: Overview
- Engine Controls - System/component Tests: Diagnosis
- Engine Controls - System/component Tests: Wiring
- Engine Controls - System/component Tests: Other
- Engine Controls - Basic Testing: Specifications
- Engine Controls - Basic Testing: Diagnosis
- Engine Controls - Basic Testing: Other
- Abbreviations
- Accessory Drive Belts
- Adjustments
- Airbag
- Antenna Systems
- Anti-Lock/traction Control
- Application
- Automatic HVAC System
- Automatic Trans
- Axle Shafts
- Basic Trouble Shooting
- Body, Cab Control Systems
- Brakes
- Cabin Air Filter
- Charging System
- Check Lists
- Computer Relearn
- Cooling System (Mechanical)
- Cruise Control Systems
- Diagnostic Connector Locations
- Differentials & Drive Axles
- Door Locks & Anti-Theft Systems
- Drive Cycles
- Driveline/axles
- Driveshaft & Universal Joints
- DTC Index
- Electrical
- Electrical Component Locations
- Emission Applications
- Engine
- Engine Performance
- Fuses & Circuit Breakers
- Gauges & Instrument Panels
- General Servicing - All Makes
- Headlights
- Heated Glass/defoggers
- Identification
- Manual & Power Steering
- Mechanical
- Mechanical - Hydraulic
- Metric Conversions
- Mirrors
- Oem General Information
- Pin Voltage Charts
- Procedures
- Removal & Installation
- Restraints
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- Sensor Range Charts
- Specifications
- Starter
- Steering
- Steering Column
- Steering Column Switches
- Sun Roof/t-Top/convertible Top
- Suspension Front
- Suspension Rear
- Testing & Diagnostics
- Theory & Operation
- Timing Belt
- Traction Control Disable
- Transmission
- Wheel Alignment
- Windows
- Wiper/washer Systems
- Wiring Diagrams - Engine Performance