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.
1999 Suzuki Grand Vitara JS, AutomaticFACTORY OEM SERVICE PROCEDURE
Diagnostic Trouble Code (DTC) Identification
DTC IDENTIFICATION
| DTC | System Affected | Condition | ||||
|---|---|---|---|---|---|---|
| P0101 | MAF Sensor Circuit | Poor MAF Sensor Performance | ||||
| P0102 | MAF Sensor Circuit | MAF Sensor Low Input | ||||
| P0103 | MAF Sensor Circuit | MAF Sensor High Input | ||||
| P0111 | IAT Sensor Circuit | Circuit Range/Performance Problem | ||||
| P0112 | IAT Sensor Circuit | Low IAT Sensor Circuit Input | ||||
| P0113 | IAT Sensor Circuit | High IAT Sensor Circuit Input | ||||
| P0116 | ECT Sensor Circuit | ECT Sensor Circuit Range/Performance Problem | ||||
| P0117 | ECT Sensor Circuit | Low ECT Sensor Circuit Input | ||||
| P0118 | ECT Sensor Circuit | High ECT Sensor Circuit Input | ||||
| P0121 | TP Sensor Circuit | Poor TP Sensor Performance | ||||
| P0122 | TP Sensor Circuit | Low TP Sensor Circuit Input | ||||
| P0123 | TP Sensor Circuit | High TP Sensor Circuit Input | ||||
| P0125 | ECT Sensor Circuit | Insufficient Coolant Temperature For Closed Loop Operation | ||||
| P0131 (1) | HO2S No. 1 Circuit | Low HO2S No. 1 Circuit Input | ||||
| P0132 (1) | HO2S No. 1 Circuit | High HO2S No. 1 Circuit Input | ||||
| P0133 (1) | HO2S No. 1 Circuit | Slow Response Of HO2S No. 1 Circuit | ||||
| P0134 (1) | HO2S No. 1 Circuit | No HO2S No. 1 Circuit Activity Detected | ||||
| P0135 (1) | HO2S No. 1 Heater Circuit | HO2S No. 1 Heater Circuit Malfunction | ||||
| P0136 (1) | HO2S No. 2 Circuit | HO2S No. 2 Circuit Malfunction | ||||
| P0141 (1) | HO2S No. 2 Heater Circuit | HO2S No. 2 Heater Circuit Malfunction | ||||
| P0151 (2) | HO2S No. 1 Circuit | Low HO2S No. 1 Circuit Input | ||||
| P0152 (2) | HO2S No. 1 Circuit | High HO2S No. 1 Circuit Input | ||||
| P0153 (2) | HO2S No. 1 Circuit | Slow Response Of HO2S No. 1 Circuit | ||||
| P0154 (2) | HO2S No. 1 Circuit | No HO2S No. 1 Circuit Activity Detected | ||||
| P0155 (2) | HO2S No. 1 Heater Circuit | HO2S No. 1 Heater Circuit Malfunction | ||||
| P0156 (2) | HO2S No. 2 Circuit | HO2S No. 2 Circuit Malfunction | ||||
| P0161 (2) | HO2S No. 2 Heater Circuit | HO2S No. 2 Heater Circuit Malfunction | ||||
| P0171 (1) | Fuel System Lean | Total Fuel Trim Is Greater Than Allowed Specification | ||||
| P0172 (1) | Fuel System Rich | Total Fuel Trim Is Less Than Allowed Specification | ||||
| P0174 (2) | Fuel System Lean | Total Fuel Trim Is Greater Than Allowed Specification | ||||
| P0175 (2) | Fuel System Rich | Total Fuel Trim Is Less Than Allowed Specification | ||||
| P0300 | Random Misfire Detected | Electrical Or Mechanical Misfire (Catalyst Damaging) | ||||
| P0301 | Cylinder No. 1 Misfire | Electrical Or Mechanical Misfire Common To One Cylinder | ||||
| P0302 | Cylinder No. 2 Misfire | Electrical Or Mechanical Misfire Common To One Cylinder | ||||
| P0303 | Cylinder No. 3 Misfire | Electrical Or Mechanical Misfire Common To One Cylinder | ||||
| P0304 | Cylinder No. 4 Misfire | Electrical Or Mechanical Misfire Common To One Cylinder | ||||
| P0305 | Cylinder No. 5 Misfire | Electrical Or Mechanical Misfire Common To One Cylinder | ||||
| P0306 | Cylinder No. 6 Misfire | Electrical Or Mechanical Misfire Common To One Cylinder | ||||
| P0335 | CKP Sensor Circuit | No CKP Sensor Signal (Engine Running) | ||||
| P0340 | CMP Sensor Circuit | No CMP Sensor Signal For 2 Seconds During Engine Cranking | ||||
| P0400 | EGR Flow Malfunction | Excessive Or Insufficient EGR Flow | ||||
| P0420 (1) | Catalyst Efficiency Low | HO2S No. 1 & 2 Output Is Similar | ||||
| P0430 (2) | Catalyst Efficiency Low | HO2S No. 1 & 2 Output Is Similar | ||||
| P0440 | EVAP Emission Control System | EVAP System Leak Detected | ||||
| P0450 | EVAP System Pressure Sensor | Pressure Sensor Circuit Open Or Shorted To Ground | ||||
| P0451 | EVAP System Pressure Sensor | Pressure Sensor Range/Performance Problem | ||||
| P0455 | EVAP System | Excessive Leakage From EVAP System Detected | ||||
| P0461 | Fuel Level Sensor Circuit | Poor Fuel Level Sensor Circuit Performance | ||||
| P0463 | Fuel Level Sensor Circuit | High Voltage Input | ||||
| P0500 | Vehicle Speed Sensor Malfunction | No Signal During Fuel-Cut | ||||
| P0505 | Idle Control System Malfunction | Target Idle Speed Not Obtained | ||||
| P0601 | PCM Memory Check Sum Error | Data Write Error | ||||
| P1408 | MDP Sensor Circuit | MDP Sensor Circuit Open or Shorted To Ground | ||||
| P1410 | Fuel Tank Pressure Control System | Low Voltage Signal With High Fuel Level Reading | ||||
| P1450 | Barometric Pressure Sensor | Low Or High Input | ||||
| P1451 | Barometric Pressure Sensor | Barometric Pressure Sensor Performance Problem During Cranking | ||||
| P1500 | Engine Starter Signal Circuit | No Input Or Constant Input From Starter Signal Circuit | ||||
| P1510 | PCM Back-Up Power Supply Malfunction | No Back-Up Power Supply After Engine Start | ||||
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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.