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.
2003 Suzuki Aerio GS, AWD, AutomaticFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code Definitions
DIAGNOSTIC TROUBLE CODE DEFINITIONS
| DTC | Definition | ||||||
|---|---|---|---|---|---|---|---|
| P0101 (1) | Mass Air Flow Sensor - Performance | ||||||
| P0102 | Mass Air Flow Sensor Circuit - Low Voltage | ||||||
| P0103 | Mass Air Flow Sensor Circuit - High Voltage | ||||||
| P0107 | Manifold Absolute Pressure Sensor Circuit - Low Input | ||||||
| P0108 | Manifold Absolute Pressure Sensor Circuit - High Input | ||||||
| P0111 (1) | Intake Air Temperature Circuit - Range/Performance | ||||||
| P0112 | Intake Air Temperature Sensor Circuit - Low Input | ||||||
| P0113 | Intake Air Temperature Sensor Circuit - High Input | ||||||
| P0116 (1) | Low Coolant Temperature Or Specified Value | ||||||
| P0117 | Engine Coolant Temperature Sensor Circuit - Low Input | ||||||
| P0118 | Engine Coolant Temperature Sensor Circuit - High Input | ||||||
| P0121 (1) | Throttle Position Sensor Circuit - Range/Performance | ||||||
| P0122 | Throttle Position Sensor Circuit - Low Input | ||||||
| P0123 | Throttle Position Sensor Circuit - High Input | ||||||
| P0125 (1) | Insufficient Coolant Temperature For Closed Loop Operation | ||||||
| P0128 (1) | Coolant Thermostat Malfunction | ||||||
| P0131 (1) | Heated Oxygen Sensor No. 1 Circuit - Low Voltage | ||||||
| P0132 (1) | Heated Oxygen Sensor No. 1 Circuit - High Voltage | ||||||
| P0133 (1) | Heated Oxygen Sensor No. 1 Circuit - Slow Response | ||||||
| P0134 (1) | Heated Oxygen Sensor No. 1 Circuit - No Activity Detected | ||||||
| P0135 (1) | Heated Oxygen Sensor No. 1 - Heater Circuit Malfunction | ||||||
| P0137 (1) | Heated Oxygen Sensor No. 2 - High Voltage | ||||||
| P0138 (1) | Heated Oxygen Sensor No. 2 - Low Voltage | ||||||
| P0141 (1) | Heated Oxygen Sensor No. 2 - Heater Circuit Malfunction | ||||||
| P0171 (1) | Fuel System - Too Lean | ||||||
| P0172 (1) | Fuel System - Too Rich | ||||||
| P0300 (2) | Random Misfire Detected | ||||||
| P0301 (2) | Cylinder No. 1 Misfire Detected | ||||||
| P0302 (2) | Cylinder No. 2 Misfire Detected | ||||||
| P0303 (2) | Cylinder No. 3 Misfire Detected | ||||||
| P0304 (2) | Cylinder No. 4 Misfire Detected | ||||||
| P0327 (2) | Knock Sensor - Low Input | ||||||
| P0328 (2) | Knock Sensor - High Input | ||||||
| P0335 | Crankshaft Position Sensor - Circuit Malfunction | ||||||
| P0340 | Camshaft Position Sensor - Circuit Malfunction | ||||||
| P0401 (1) | EGR - Insufficient Flow | ||||||
| P0402 (1) | EGR - Excessive Flow Detected | ||||||
| P0403 | EGR Valve - Output Voltage Low | ||||||
| P0420 (1) | Catalyst System Efficiency Below Threshold | ||||||
| P0442 (1) | EVAP System - Small Leak Detected | ||||||
| P0444 (1) | EVAP System Purge Control Valve - Open Circuit | ||||||
| P0445 (1) | EVAP System Purge Control Valve - Short Circuit | ||||||
| P0447 (1) | EVAP System Vent Control - Vent Control Circuit Open | ||||||
| P0448 (1) | EVAP System Vent Control - Vent Control Circuit Shorted | ||||||
| P0451 (1) | EVAP System Pressure Sensor - Range/Performance | ||||||
| P0452 (1) | EVAP System Pressure Sensor - Low Input | ||||||
| P0453 (1) | EVAP System Pressure Sensor - High Input | ||||||
| P0455 (1) | EVAP System - Gross Leak Detected | ||||||
| P0456 (1) | EVAP System - Very Small Leak Detected | ||||||
| P0461 (1) | Fuel Level Sensor Circuit - Performance | ||||||
| P0463 (1) | Fuel Level Sensor Circuit - High Voltage Input | ||||||
| P0464 (1) | Fuel Level Sensor Circuit - Intermittent Condition | ||||||
| P0480 | Radiator Fan Control Circuit Malfunction | ||||||
| P0481 | A/C Condenser Fan Control Circuit Malfunction | ||||||
| P0496 (1) | EVAP System - Flow During Non-Purge | ||||||
| P0500 | Vehicle Speed Sensor Malfunction | ||||||
| P0505 (1) | Idle Control System Malfunction | ||||||
| P0506 (1) | Idle Control System - RPM Too Low | ||||||
| P0507 (1) | Idle Control System - RPM Too High | ||||||
| P0601 | Internal Control Module Memory Check Sum Error | ||||||
| P0616 (1) | Starter Signal Circuit - Low | ||||||
| P0617 (1) | Starter Signal Circuit - High | ||||||
| P1510 | Engine Control Module Back-Up Power Supply Malfunction | ||||||
| P1600 | Serial Communication Problem Between ECM & TCM | ||||||
| P1700 (3) | Throttle Position Signal Input Malfunction | ||||||
| P1702 (3) | Internal Control Module - Memory Check Sum Error | ||||||
| P0705 (3) | Transmission Range Sensor Circuit Malfunction | ||||||
| P0710 (3) | Transmission Fluid Temperature Sensor Circuit | ||||||
| P0715 (3) | Input Speed Sensor Circuit Malfunction | ||||||
| P0720 (3) | Output Speed Sensor Circuit Malfunction | ||||||
| P0725 (3) | Engine Speed Input Circuit Malfunction | ||||||
| P0741 (3) | Torque Converter Clutch Circuit - Performance Or Stuck Off | ||||||
| P0743 (3) | Torque Converter Clutch Circuit - Stuck On | ||||||
| P0745 (3) | Pressure Control Solenoid Malfunction | ||||||
| P0751 (3) | Shift Solenoid-A - Performance Or Stuck Off | ||||||
| P0753 (3) | Shift Solenoid-A - Electrical Malfunction | ||||||
| P0756 (3) | Shift Solenoid-B - Performance Or Stuck Off | ||||||
| P0758 (3) | Shift Solenoid-B - Electrical Malfunction | ||||||
| P2025 (1) | EVAP Fuel Vapor Temperature Sensor Performance | ||||||
| P2026 (1) | EVAP Fuel Vapor Temperature Sensor Circuit - Low Voltage | ||||||
| P2027 (1) | EVAP Fuel Vapor Temperature Sensor Circuit - High Voltage | ||||||
| P2227 (1) | Barometric Pressure Sensor - Circuit Performance | ||||||
| P2228 (1) | Barometric Pressure Sensor - Low Input | ||||||
| P2229 (1) | Barometric Pressure Sensor - High Input | ||||||
| P2231 | Heated Oxygen Sensor No. 1 - Signal Circuit Shorted To Heater Circuit | ||||||
| P2232 | Heated Oxygen Sensor No. 2 - Signal Circuit Shorted To Heater Circuit | ||||||
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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.