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 Suzuki Vitara JS, 4D Utility, AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Controls - Self-Diagnostics
- Introduction
- Self-Diagnostic System
- Summary
- DTC Definition
- System Tests
- Diagnostic Tests
- DTC P0101: Mass Air Flow (MAF) Sensor Circuit Performance Problem
- DTC P0102: Mass Air Flow (MAF) Sensor Circuit, Low Input
- DTC P0103: Mass Air Flow (MAF) Sensor Circuit, High Input
- DTC P0111: Intake Air Temperature (IAT) Sensor Circuit Range/Performance Problem
- DTC P0112: Intake Air Temperature (IAT) Sensor Circuit, Low Input
- DTC P0113: Intake Air Temperature (IAT) Sensor Circuit, High Input
- DTC P0116: Engine Coolant Temperature (ECT) Sensor Circuit Range/Performance Problem
- DTC P0117: Engine Coolant Temperature (ECT) Sensor Circuit, Low Input
- DTC P0118: Engine Coolant Temperature (ECT) Sensor Circuit, High Input
- DTC P0121: Throttle Position (TP) Sensor Circuit Performance Problem
- DTC P0122: Throttle Position (TP) Sensor Circuit, Low Input
- DTC P0123: Throttle Position (TP) Sensor Circuit, High Input
- DTC P0125: Insufficient Coolant Temperature For Closed Loop Operation
- DTC P0131: Ho2S No. 1 Circuit, Low Input, Or DTC P0132: Ho2S No. 1 Circuit, High Input
- DTC P0133: Ho2S No. 1 Circuit, Slow Response
- DTC P0134: Ho2S No. 1 Circuit, No Activity Detected
- DTC P0135: Ho2S No. 1 Heater Circuit Malfunction
- DTC P0136: Ho2S No. 2 Circuit Malfunction
- DTC P0141: Ho2S No. 2 Heater Circuit Malfunction
- DTC P0171: Total Fuel Trim Is Greater Than Allowed Specification, Or DTC P0172: Total Fuel Trim Is Less Than Allowed Specification
- DTC P0300: Random Misfire, Or DTC P0301, P0302, P0303 Or P0304: Cylinders No. 1-4 Misfire
- DTC P0327: Knock Sensor Circuit, Low Input, Or DTC P0328: Knock Sensor Circuit, High Input
- DTC P0335: Crankshaft Position (CKP) Sensor Circuit Malfunction
- DTC P0340: Camshaft Position (CMP) Sensor Circuit Malfunction
- DTC P0400: EGR Flow Malfunction
- DTC P0403: EGR Flow Malfunction
- DTC P0420: Catalyst System Low Efficiency
- DTC P0440: EVAP Circuit, Malfunction, Or DTC P0455: EVAP Circuit, Large Leak Detected
- DTC P0443: EVAP Circuit, Purge Control Valve Circuit Malfunction
- DTC P0450: EVAP Circuit, Pressure Sensor Malfunction
- DTC P0451: EVAP Circuit, Pressure Sensor Range/Performance Problem
- DTC P0461: Fuel Level Sensor Circuit Performance Problem
- DTC P0463: Fuel Level Sensor Circuit, High Input
- DTC P0500: Vehicle Speed Sensor (VSS) Malfunction
- DTC P0505: Idle Air Control (IAC) System Malfunction
- DTC P0601: Internal Control Module Memory Check Sum Error
- DTC P1408: Manifold Absolute Pressure (Map) Sensor Circuit Malfunction
- DTC P1410: Fuel Tank Pressure Circuit Malfunction
- DTC P1450: Barometric Pressure Sensor Circuit Malfunction, Or DTC P1451: Barometric Pressure Sensor Performance Problem
- DTC P1500: Starter Signal Circuit Malfunction
- DTC P1510: Pcm Back-Up Power Supply Malfunction
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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