P01xx OBD-II Codes (P0100–P0199)
100 fault codes in the P01xx range. Click any code for causes, diagnostic steps, severity, and common fixes.
P0100 serious
Mass Air Flow Circuit Malfunction
P0101 serious
Mass Air Flow Sensor Circuit Range/Performance
P0102 serious
Mass Air Flow Circuit Low Input
P0103 serious
Mass Air Flow Circuit High Input
P0104 moderate
Mass Air Flow (MAF) Circuit Intermittent
P0105 moderate
Manifold Absolute Pressure (MAP) / Barometric Pressure Circuit Malfunction
P0106 serious
Manifold Absolute Pressure Sensor Circuit Range/Performance
P0107 serious
Manifold Absolute Pressure Sensor Circuit Low Input
P0108 serious
Manifold Absolute Pressure Sensor Circuit High Input
P0109 moderate
Manifold Absolute Pressure (MAP) / Barometric Pressure Circuit Intermittent
P0110 moderate
Intake Air Temperature Sensor 1 Circuit
P0111 moderate
Intake Air Temperature Sensor 1 Circuit Range/Performance
P0112 moderate
Intake Air Temperature Sensor 1 Circuit Low Input
P0113 moderate
Intake Air Temperature Sensor 1 Circuit High Input
P0114 low
Intake Air Temperature (IAT) Sensor Circuit Intermittent
P0115 moderate
Engine Coolant Temperature Sensor 1 Circuit
P0116 moderate
Engine Coolant Temperature Sensor 1 Circuit Range/Performance
P0117 moderate
Engine Coolant Temperature Sensor 1 Circuit Low Input
P0118 moderate
Engine Coolant Temperature Sensor 1 Circuit High Input
P0119 moderate
Engine Coolant Temperature (ECT) Sensor Circuit Intermittent
P0120 serious
Throttle/Pedal Position Sensor A Circuit Malfunction
P0121 serious
Throttle/Pedal Position Sensor A Circuit Range/Performance
P0122 serious
Throttle/Pedal Position Sensor A Circuit Low Input
P0123 serious
Throttle/Pedal Position Sensor A Circuit High Input
P0124 moderate
Throttle Position Sensor (TPS) Circuit Intermittent
P0125 moderate
Insufficient Coolant Temperature for Closed Loop Fuel Control
P0126 moderate
Insufficient Coolant Temperature for Stable Operation
P0127 moderate
Intake Air Temperature Too High
P0128 moderate
Coolant Temperature Below Thermostat Regulating Temperature
P0129 low
Barometric Pressure Too Low
P0130 serious
O2 Sensor Circuit (Bank 1, Sensor 1)
P0131 serious
O2 Sensor Circuit Low Voltage (Bank 1, Sensor 1)
P0132 serious
O2 Sensor Circuit High Voltage (Bank 1, Sensor 1)
P0133 moderate
O2 Sensor Circuit Slow Response (Bank 1, Sensor 1)
P0134 serious
O2 Sensor Circuit No Activity Detected (Bank 1, Sensor 1)
P0135 moderate
O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
P0136 moderate
O2 Sensor Circuit (Bank 1, Sensor 2)
P0137 moderate
O2 Sensor Circuit Low Voltage (Bank 1, Sensor 2)
P0138 moderate
O2 Sensor Circuit High Voltage (Bank 1, Sensor 2)
P0139 low
O2 Sensor Circuit Slow Response (Bank 1 Sensor 2)
P0140 moderate
O2 Sensor Circuit No Activity (Bank 1, Sensor 2)
P0141 moderate
O2 Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
P0142 moderate
O2 Sensor Circuit (Bank 1, Sensor 3)
P0143 low
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3)
P0144 low
O2 Sensor Circuit High Voltage (Bank 1 Sensor 3)
P0145 low
O2 Sensor Circuit Slow Response (Bank 1 Sensor 3)
P0146 low
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3)
P0147 low
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
P0148 moderate
Fuel Delivery Error
P0149 moderate
Fuel Timing Error
P0150 serious
O2 Sensor Circuit (Bank 2, Sensor 1)
P0151 moderate
O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1)
P0152 serious
O2 Sensor Circuit High Voltage (Bank 2, Sensor 1)
P0153 moderate
O2 Sensor Circuit Slow Response (Bank 2 Sensor 1)
P0154 serious
O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 1)
P0155 moderate
O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P0156 moderate
O2 Sensor Circuit (Bank 2, Sensor 2)
P0157 low
O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2)
P0158 low
O2 Sensor Circuit High Voltage (Bank 2 Sensor 2)
P0159 low
O2 Sensor Circuit Slow Response (Bank 2 Sensor 2)
P0160 low
O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
P0161 low
O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
P0162 moderate
O2 Sensor Circuit (Bank 2, Sensor 3)
P0163 moderate
O2 Sensor Circuit Low Voltage (Bank 2, Sensor 3)
P0164 moderate
O2 Sensor Circuit High Voltage (Bank 2, Sensor 3)
P0165 moderate
O2 Sensor Circuit Slow Response (Bank 2, Sensor 3)
P0166 moderate
O2 Sensor Circuit No Activity Detected (Bank 2, Sensor 3)
P0167 low
O2 Sensor Heater Circuit (Bank 2, Sensor 3)
P0168 low
O2 Sensor Heater Circuit High Voltage (Bank 2, Sensor 3)
P0169 low
O2 Sensor Heater Circuit Low Voltage (Bank 2, Sensor 3)
P0170 serious
Fuel Trim Malfunction (Bank 1)
P0171 serious
System Too Lean (Bank 1)
P0172 serious
System Too Rich (Bank 1)
P0173 moderate
Fuel Trim Malfunction (Bank 2)
P0174 serious
System Too Lean (Bank 2)
P0175 serious
System Too Rich (Bank 2)
P0176 moderate
Fuel Composition Sensor Circuit Malfunction
P0177 moderate
Fuel Composition Sensor Circuit Range/Performance
P0178 moderate
Fuel Composition Sensor Circuit Low
P0179 moderate
Fuel Composition Sensor Circuit High
P0180 low
Fuel Temperature Sensor A Circuit Malfunction
P0181 low
Fuel Temperature Sensor A Circuit Range/Performance
P0182 low
Fuel Temperature Sensor A Circuit Low
P0183 low
Fuel Temperature Sensor A Circuit High
P0184 moderate
Fuel Temperature Sensor B Circuit
P0185 moderate
Fuel Temperature Sensor B Circuit Range/Performance
P0186 moderate
Fuel Temperature Sensor B Circuit Low
P0187 moderate
Fuel Temperature Sensor B Circuit High
P0188 moderate
Fuel Temperature Sensor B Circuit Intermittent
P0189 moderate
Fuel Temperature Sensor B Circuit Intermittent/Erratic
P0190 serious
Fuel Rail Pressure Sensor Circuit Malfunction
P0191 serious
Fuel Rail Pressure Sensor A Circuit Range/Performance
P0192 serious
Fuel Rail Pressure Sensor Circuit Low Input
P0193 critical
Fuel Rail Pressure Sensor Circuit High
P0194 moderate
Fuel Rail Pressure Sensor Circuit Intermittent
P0195 moderate
Engine Oil Temperature Sensor Malfunction
P0196 moderate
Engine Oil Temperature Sensor Range/Performance
P0197 moderate
Engine Oil Temperature Sensor Low
P0198 moderate
Engine Oil Temperature Sensor High
P0199 low
Engine Oil Temperature Sensor Intermittent