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Free Auto Repair Advice by Certified ASE Technicians.
Diagnostic Trouble Codes
PO100 - PO199 Numbered Code Identification Chart
P0100 Mass or Volume Air Flow Circuit Malfunction
P0101 Mass or Volume Air Flow Circuit Range/Performance Problem
P0101 Mass or Volume Air Flow Circuit Low Input
P0103 Mass or Volume Air Flow Circuit High Input
P0104 Mass or Volume Air Flow Circuit Intermittent
P0105 Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction
P0106 Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem
P0107 Manifold Absolute Pressure/Barometric Pressure Circuit Low Input
P0108 Manifold Absolute Pressure/Barometric Pressure Circuit High Input
P0109 Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent
P0110 Intake Air Temperature Circuit Malfunction
P0111 Intake Air Temperature Circuit Range/Performance Problem
P0112 Intake Air Temperature Circuit Low Input
P0113 Intake Air Temperature Circuit High Input
P0114 Intake Air Temperature Circuit Intermittent
P0115 Engine Coolant Temperature Circuit Malfunction
P0116 Engine Coolant Temperature Circuit Range/Performance Problem
P0117 Engine Coolant Temperature Circuit Low Input
P0118 Engine Coolant Temperature Circuit High Input
P0119 Engine Coolant Temperature Circuit Intermittent
P0120 Throttle/Pedal Position Sensor/Switch A Circuit Malfunction
P0120 ETS Main Throttle Position Sensor Malfunction
P0121 Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem
P0122 Throttle/Pedal Position Sensor/Switch A Circuit Low Input
P0123 Throttle/Pedal Position Sensor/Switch A Circuit High Input
P0124 Throttle/Pedal Position Sensor/Switch A Circuit Intermittent
P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
P0126 Insufficient Coolant Temperature for Stable Operation
P0128 Range/Performance Problem In Thermostat
P0128 ECT Below Thermostat Regulating Temperature
P0130 Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 1
P0131 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 1)
P0132 Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 1)
P0133 Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 1)
P0134 Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 1)
P0135 Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
P0136 Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 2)
P0137 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 2)
P0138 Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 2)
P0139 Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 2)
P0140 Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 2)
P0141 Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
P0142 Oxygen Sensor Circuit Malfunction (Bank 1 Sensor 3)
P0143 Oxygen Sensor Circuit Low Voltage (Bank 1 Sensor 3)
P0144 Oxygen Sensor Circuit High Voltage (Bank 1 Sensor 3)
P0145 Oxygen Sensor Circuit Slow Response (Bank 1 Sensor 3)
P0146 Oxygen Sensor Circuit No Activity Detected (Bank 1 Sensor 3)
P0147 Oxygen Sensor Heater Circuit Malfunction (Bank 1 Sensor 3)
P0150 Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 1)
P0151 Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 1)
P0152 Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 1)
P0153 Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 1)
P0154 Oxygen Sensor Circuit No Activity Detected (Bank 2 Sensor 1
P0155 Oxygen Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
P0156 Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 2)
P0157 Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 2)
P0158 Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 2)
P0159 Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 2)
P0160 Oxygen Sensor Circuit No Activity Detected (Bank 2 Sensor 2)
P0161 Oxygen Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
P0162 Oxygen Sensor Circuit Malfunction (Bank 2 Sensor 3)
P0163 Oxygen Sensor Circuit Low Voltage (Bank 2 Sensor 3)
P0164 Oxygen Sensor Circuit High Voltage (Bank 2 Sensor 3)
P0165 Oxygen Sensor Circuit Slow Response (Bank 2 Sensor 3)
P0166 Oxygen Sensor Circuit No Activity Detected (Bank 2 Sensor 3
P0167 Oxygen Sensor Heater Circuit Malfunction (Bank 2 Sensor 3)
P0170 Fuel Trim Malfunction (Bank 1)
P0171 System too Lean (Bank 1)
P0172 System too Rich (Bank 1)
P0173 Fuel Trim Malfunction (Bank 2)
P0174 System too Lean (Bank 2)
P0175 System too Rich (Bank 2)
P0176 Fuel Composition Sensor Circuit Malfunction
P0177 Fuel Composition Sensor Circuit Range/Performance
P0178 Fuel Composition Sensor Circuit Low Input
P0179 Fuel Composition Sensor Circuit High Input
P0180 Fuel Temperature Sensor A Circuit Malfunction
P0181 Fuel Temperature Sensor A Circuit Range/Performance
P0182 Fuel Temperature Sensor A Circuit Low Input
P0183 Fuel Temperature Sensor A Circuit High Input
P0184 Fuel Temperature Sensor A Circuit Intermittent
P0185 Fuel Temperature Sensor B Circuit Malfunction
P0186 Fuel Temperature Sensor B Circuit Range/Performance
P0187 Fuel Temperature Sensor B Circuit Low Input
P0188 Fuel Temperature Sensor B Circuit High Input
P0189 Fuel Temperature Sensor B Circuit Intermittent
P0190 Fuel Rail Pressure Sensor Circuit Malfunction
P0191 Fuel Rail Pressure Sensor Circuit Range/Performance
P0192 Fuel Rail Pressure Sensor Circuit Low Input
P0193 Fuel Rail Pressure Sensor Circuit High Input
P0194 Fuel Rail Pressure Sensor Circuit Intermittent
P0195 Engine Oil Temperature Sensor Malfunction
P0196 Engine Oil Temperature Sensor Range/Performance
P0197 Engine Oil Temperature Sensor Low
P0198 Engine Oil Temperature Sensor High
P0199 Engine Oil Temperature Sensor Intermittent
(note: the diagnostic trouble codes listed are the most likely definition, some manufactures have specific codes for individual models. If the trouble code
listed does not apply to your vehicle consult an
Car Repair Manual)
Look up Trouble code questions in our
Car Repair forum section.
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