P21xx OBD2 Trouble Codes
This is the listing of P21xx OBD2 diagnostic trouble codes (DTCs). They all start with P21, e.g., P2111, P2174. The first two characters P2 indicate that they are generic powertrain related codes. The codes below are considered generic because they apply to all makes/models of OBD2 vehicles, although specific diagnosis & repair steps may vary.
P2100-P2199 Trouble Codes
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| Code(s) | Description |
|---|---|
| P2100 | Throttle Actuator "A" Control Motor Circuit/Open |
| P2101 | Throttle Actuator "A" Control Motor Circuit Range/Performance |
| P2102 | Throttle Actuator "A" Control Motor Circuit Low |
| P2103 | Throttle Actuator "A" Control Motor Circuit High |
| P2104 | Throttle Actuator Control System - Forced Idle |
| P2105 | Throttle Actuator Control System - Forced Engine Shutdown |
| P2106 | Throttle Actuator Control System - Forced Limited Power |
| P2107 | Throttle Actuator Control Module Processor |
| P2108 | Throttle Actuator Control Module Performance |
| P2109 | Throttle/Pedal Position Sensor "A" Minimum Stop Performance |
| P210A | Throttle Actuator "B" Control Motor Circuit/Open |
| P210B | Throttle Actuator "B" Control Motor Circuit Range/Performance |
| P210C | Throttle Actuator "B" Control Motor Circuit Low |
| P210D | Throttle Actuator "B" Control Motor Circuit High |
| P210E | Throttle/Pedal Position Sensor/Switch "C"/"F" Voltage Correlation |
| P210F | ISO/SAE Reserved |
| P2110 | Throttle Actuator Control System - Forced Limited RPM |
| P2111 | Throttle Actuator Control System - Stuck Open |
| P2112 | Throttle Actuator Control System - Stuck Closed |
| P2113 | Throttle/Pedal Position Sensor "B" Minimum Stop Performance |
| P2114 | Throttle/Pedal Position Sensor "C" Minimum Stop Performance |
| P2115 | Throttle/Pedal Position Sensor "D" Minimum Stop Performance |
| P2116 | Throttle/Pedal Position Sensor "E" Minimum Stop Performance |
| P2117 | Throttle/Pedal Position Sensor "F" Minimum Stop Performance |
| P2118 | Throttle Actuator Control Motor Current Range/Performance |
| P2119 | Throttle Actuator Control Throttle Body Range/Performance |
| P211A, P211B, P211C, P211D, P211E, P211F | ISO/SAE Reserved |
| P2120 | Throttle/Pedal Position Sensor/Switch "D" Circuit |
| P2121 | Throttle/Pedal Position Sensor/Switch "D" Circuit Range/Performance |
| P2122 | Throttle/Pedal Position Sensor/Switch "D" Circuit Low |
| P2123 | Throttle/Pedal Position Sensor/Switch "D" Circuit High |
| P2124 | Throttle/Pedal Position Sensor/Switch "D" Circuit Intermittent |
| P2125 | Throttle/Pedal Position Sensor/Switch "E" Circuit |
| P2126 | Throttle/Pedal Position Sensor/Switch "E" Circuit Range/Performance |
| P2127 | Throttle/Pedal Position Sensor/Switch "E" Circuit Low |
| P2128 | Throttle/Pedal Position Sensor/Switch "E" Circuit High |
| P2129 | Throttle/Pedal Position Sensor/Switch "E" Circuit Intermittent |
| P212A | Throttle Position Sensor/Switch "G" Circuit |
| P212B | Throttle Position Sensor/Switch "G" Circuit Range/Performance |
| P212C | Throttle Position Sensor/Switch "G" Circuit Low |
| P212D | Throttle Position Sensor/Switch "G" Circuit High |
| P212E | Throttle Position Sensor/Switch "G" Circuit Intermittent |
| P212F | ISO/SAE Reserved |
| P2130 | Throttle/Pedal Position Sensor/Switch "F" Circuit |
| P2131 | Throttle/Pedal Position Sensor/Switch "F" Circuit Range/Performance |
| P2132 | Throttle/Pedal Position Sensor/Switch "F" Circuit Low |
| P2133 | Throttle/Pedal Position Sensor/Switch "F" Circuit High |
| P2134 | Throttle/Pedal Position Sensor/Switch "F" Circuit Intermittent |
| P2135 | Throttle/Pedal Pos Sensor/Switch A / B Voltage Correlation |
| P2136 | Throttle/Pedal Pos Sensor/Switch A / C Voltage Correlation |
| P2137 | Throttle/Pedal Pos Sensor/Switch B / C Voltage Correlation |
| P2138 | Throttle/Pedal Pos Sensor/Switch D / E Voltage Correlation |
| P2139 | Throttle/Pedal Pos Sensor/Switch D / F Voltage Correlation |
| P213A | Exhaust Gas Recirculation Throttle Control Circuit "B" /Open |
| P213B | Exhaust Gas Recirculation Throttle Control Circuit "B" Range/Performance |
| P213C | Exhaust Gas Recirculation Throttle Control Circuit "B" Low |
| P213D | Exhaust Gas Recirculation Throttle Control Circuit "B" High |
| P213E | Fuel Injection System Fault - Forced Engine Shutdown |
| P213F | Fuel Pump System Fault - Forced Engine Shutdown |
| P2140 | Throttle/Pedal Pos Sensor/Switch E / F Voltage Correlation |
| P2141 | Exhaust Gas Recirculation Throttle Control Circuit "A" Low |
| P2142 | Exhaust Gas Recirculation Throttle Control Circuit "A" High |
| P2143 | Exhaust Gas Recirculation Vent Control Circuit/Open |
| P2144 | Exhaust Gas Recirculation Vent Control Circuit Low |
| P2145 | Exhaust Gas Recirculation Vent Control Circuit High |
| P2146 | Fuel Injector Group "A" Supply Voltage Circuit/Open |
| P2147 | Fuel Injector Group "A" Supply Voltage Circuit Low |
| P2148 | Fuel Injector Group "A" Supply Voltage Circuit High |
| P2149 | Fuel Injector Group "B" Supply Voltage Circuit/Open |
| P214A, P214B, P214C, P214D, P214E, P214F | ISO/SAE Reserved |
| P2150 | Fuel Injector Group "B" Supply Voltage Circuit Low |
| P2151 | Fuel Injector Group "B" Supply Voltage Circuit High |
| P2152 | Fuel Injector Group "C" Supply Voltage Circuit/Open |
| P2153 | Fuel Injector Group "C" Supply Voltage Circuit Low |
| P2154 | Fuel Injector Group "C" Supply Voltage Circuit High |
| P2155 | Fuel Injector Group "D" Supply Voltage Circuit/Open |
| P2156 | Fuel Injector Group "D" Supply Voltage Circuit Low |
| P2157 | Fuel Injector Group "D" Supply Voltage Circuit High |
| P2158 | Vehicle Speed Sensor "B" |
| P2159 | Vehicle Speed Sensor "B" Range/Performance |
| P215A | Vehicle Speed - Wheel Speed Correlation |
| P215B | Vehicle Speed - Output Shaft Speed Correlation |
| P215C | Output Shaft Speed - Wheel Speed Correlation |
| P215D, P215E, P215F | ISO/SAE Reserved |
| P2160 | Vehicle Speed Sensor "B" Circuit Low |
| P2161 | Vehicle Speed Sensor "B" Intermittent/Erratic/High |
| P2162 | Vehicle Speed Sensor "A"/"B" Correlation |
| P2163 | Throttle/Pedal Position Sensor "A" Maximum Stop Performance |
| P2164 | Throttle/Pedal Position Sensor "B" Maximum Stop Performance |
| P2165 | Throttle/Pedal Position Sensor "C" Maximum Stop Performance |
| P2166 | Throttle/Pedal Position Sensor "D" Maximum Stop Performance |
| P2167 | Throttle/Pedal Position Sensor "E" Maximum Stop Performance |
| P2168 | Throttle/Pedal Position Sensor "F" Maximum Stop Performance |
| P2169 | Exhaust Pressure Regulator Vent Solenoid Control Circuit/Open |
| P216A | Fuel Injector Group "E" Supply Voltage Circuit/Open |
| P216B | Fuel Injector Group "E" Supply Voltage Circuit Low |
| P216C | Fuel Injector Group "E" Supply Voltage Circuit High |
| P216D | Fuel Injector Group "F" Supply Voltage Circuit/Open |
| P216E | Fuel Injector Group "F" Supply Voltage Circuit Low |
| P216F | Fuel Injector Group "F" Supply Voltage Circuit High |
| P2170 | Exhaust Pressure Regulator Vent Solenoid Control Circuit Low |
| P2171 | Exhaust Pressure Regulator Vent Solenoid Control Circuit High |
| P2172 | Throttle Actuator Control System - Sudden High Air Flow Detected |
| P2173 | Throttle Actuator Control System - High Air Flow Detected |
| P2174 | Throttle Actuator Control System - Sudden Low Air Flow Detected |
| P2175 | Throttle Actuator Control System - Low Air Flow Detected |
| P2176 | Throttle Actuator Control System - Idle Position Not Learned |
| P2177 | System Too Lean Off Idle Bank 1 |
| P2178 | System Too Rich Off Idle Bank 1 |
| P2179 | System Too Lean Off Idle Bank 2 |
| P217A | Fuel Injector Group "G" Supply Voltage Circuit/Open |
| P217B | Fuel Injector Group "G" Supply Voltage Circuit Low |
| P217C | Fuel Injector Group "G" Supply Voltage Circuit High |
| P217D | Fuel Injector Group "H" Supply Voltage Circuit/Open |
| P217E | Fuel Injector Group "H" Supply Voltage Circuit Low |
| P217F | Fuel Injector Group "H" Supply Voltage Circuit High |
| P2180 | System Too Rich Off Idle Bank 2 |
| P2181 | Cooling System Performance |
| P2182 | Engine Coolant Temperature Sensor 2 Circuit |
| P2183 | Engine Coolant Temperature Sensor 2 Circuit Range/Performance |
| P2184 | Engine Coolant Temperature Sensor 2 Circuit Low |
| P2185 | Engine Coolant Temperature Sensor 2 Circuit High |
| P2186 | Engine Coolant Temperature Sensor 2 Circuit Interm/Erratic |
| P2187 | System Too Lean at Idle Bank 1 |
| P2188 | System Too Rich at Idle Bank 1 |
| P2189 | System Too Lean at Idle Bank 2 |
| P218A, P218B, P218C, P218D, P218E, P218F | ISO/SAE Reserved |
| P2190 | System Too Rich at Idle Bank 2 |
| P2191 | System Too Lean at Higher Load Bank 1 |
| P2192 | System Too Rich at Higher Load Bank 1 |
| P2193 | System Too Lean at Higher Load Bank 2 |
| P2194 | System Too Rich at Higher Load Bank 2 |
| P2195 | O2 Sensor Signal Stuck Lean Bank 1 Sensor 1 |
| P2196 | O2 Sensor Signal Stuck Rich Bank 1 Sensor 1 |
| P2197 | O2 Sensor Signal Stuck Lean Bank 2 Sensor 1 |
| P2198 | O2 Sensor Signal Stuck Rich Bank 2 Sensor 1 |
| P2199 | Intake Air Temperature Sensor 1/2 Correlation |
| P219A | Bank 1 Air/Fuel Ratio Imbalance |
| P219B | Bank 2 Air/Fuel Ratio Imbalance |
| P219C | Cylinder #1 Imbalance Error |
| P219D | Cylinder #2 Imbalance Error |
| P219E | Cylinder #3 Imbalance Error |
| P219F | Cylinder #4 Imbalance Error |
| P21AA through P21FF | ISO/SAE Reserved |