P21xx OBD-II Codes (P2100–P2199)

100 fault codes in the P21xx range. Click any code for causes, diagnostic steps, severity, and common fixes.

P2100 critical
Throttle Actuator Control Motor Circuit Open
P2101 critical
Throttle Actuator Control Motor Circuit Range/Performance
P2102 critical
Throttle Actuator Control Motor Circuit Low
P2103 critical
Throttle Actuator Control Motor Circuit High
P2104 critical
Throttle Actuator Control System -- Forced Idle
P2105 critical
Throttle Actuator Control System -- Forced Engine Shutdown
P2106 critical
Throttle Actuator Control System -- Forced Limited Power
P2107 critical
Throttle Actuator Control Module Processor
P2108 critical
Throttle Actuator Control Module Performance
P2109 serious
Throttle Actuator 'A' Control Motor Performance
P2110 critical
Throttle Actuator Control System -- Forced Limited RPM
P2111 critical
Throttle Actuator Control System -- Stuck Open
P2112 critical
Throttle Actuator Control System -- Stuck Closed
P2113 critical
Throttle Actuator Control System - Stuck Closed
P2114 critical
Throttle Actuator Control System - Stuck Open
P2115 serious
Throttle Position Sensor/Switch 'D' Circuit
P2116 serious
Throttle Position Sensor/Switch 'D' Circuit Range/Performance
P2117 serious
Throttle Position Sensor/Switch 'D' Circuit Low
P2118 critical
Throttle Actuator Control Motor Current Range/Performance
P2119 critical
Throttle Actuator Control Throttle Body Range/Performance
P2120 critical
Throttle/Pedal Position Sensor/Switch D Circuit
P2121 critical
Throttle/Pedal Position Sensor/Switch D Circuit Range/Performance
P2122 critical
Throttle/Pedal Position Sensor/Switch D Circuit Low
P2123 critical
Throttle/Pedal Position Sensor/Switch D Circuit High
P2124 serious
Throttle Actuator Control Motor Current Range/Performance
P2125 critical
Throttle/Pedal Position Sensor/Switch E Circuit
P2126 critical
Throttle/Pedal Position Sensor/Switch E Circuit Range/Performance
P2127 critical
Throttle/Pedal Position Sensor/Switch E Circuit Low
P2128 critical
Throttle/Pedal Position Sensor/Switch E Circuit High
P2129 serious
Throttle Actuator Control Motor Current Too High
P2130 critical
Throttle/Pedal Position Sensor/Switch F Circuit
P2131 moderate
Throttle/Pedal Position Sensor/Switch F Circuit Range/Performance
P2132 critical
Throttle/Pedal Position Sensor/Switch F Circuit Low
P2133 critical
Throttle/Pedal Position Sensor/Switch F Circuit High
P2134 moderate
Throttle/Pedal Position Sensor/Switch F Circuit Intermittent
P2135 critical
Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation
P2136 critical
Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation
P2137 serious
Throttle Position Sensor/Switch 'E' Circuit
P2138 critical
Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation
P2139 critical
Throttle/Pedal Position Sensor/Switch D/F Voltage Correlation
P2140 critical
Throttle/Pedal Position Sensor/Switch E/F Voltage Correlation
P2141 moderate
Exhaust Gas Recirculation Throttle Control Circuit Low
P2142 moderate
Exhaust Gas Recirculation Throttle Control Circuit High
P2143 moderate
Exhaust Gas Recirculation Vent Control Circuit Open
P2144 moderate
Exhaust Gas Recirculation Vent Control Circuit Low
P2145 moderate
Throttle/Pedal Position Sensor/Switch A Circuit
P2146 low
Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance
P2147 low
Throttle/Pedal Position Sensor/Switch A Circuit Low
P2148 low
Throttle/Pedal Position Sensor/Switch A Circuit High
P2149 moderate
Throttle/Pedal Position Sensor/Switch B Circuit
P2150 low
Throttle/Pedal Position Sensor/Switch B Circuit Range/Performance
P2151 low
Throttle/Pedal Position Sensor/Switch B Circuit Low
P2152 low
Throttle/Pedal Position Sensor/Switch B Circuit High
P2153 moderate
Throttle/Pedal Position Sensor/Switch C Circuit
P2154 low
Throttle/Pedal Position Sensor/Switch C Circuit Range/Performance
P2155 low
Throttle/Pedal Position Sensor/Switch C Circuit Low
P2156 low
Throttle/Pedal Position Sensor/Switch C Circuit High
P2157 moderate
Throttle/Pedal Position Sensor/Switch D Circuit
P2158 low
Throttle/Pedal Position Sensor/Switch D Circuit Range/Performance
P2159 low
Throttle/Pedal Position Sensor/Switch D Circuit Low
P2160 low
Throttle/Pedal Position Sensor/Switch D Circuit High
P2161 moderate
EGR Throttle Position Sensor Circuit
P2162 moderate
EGR Throttle Position Sensor Circuit Range/Performance
P2163 moderate
EGR Throttle Position Sensor Circuit Low
P2164 moderate
EGR Throttle Position Sensor Circuit High
P2165 moderate
EGR Throttle Position Sensor Circuit Intermittent
P2166 moderate
EGR Throttle Position Sensor (Bank 1) Circuit
P2167 moderate
EGR Throttle Position Sensor (Bank 1) Circuit Range/Performance
P2168 moderate
EGR Throttle Position Sensor (Bank 1) Circuit Low
P2169 moderate
EGR Throttle Position Sensor (Bank 1) Circuit High
P2170 moderate
EGR Throttle Position Sensor (Bank 1) Circuit Intermittent
P2171 moderate
EGR Throttle Position Sensor (Bank 2) Circuit
P2172 moderate
EGR Throttle Position Sensor (Bank 2) Circuit Range/Performance
P2173 moderate
EGR Throttle Position Sensor (Bank 2) Circuit Low
P2174 moderate
EGR Throttle Position Sensor (Bank 2) Circuit High
P2175 moderate
EGR Throttle Position Sensor (Bank 2) Circuit Intermittent
P2176 moderate
Closed Loop System Too Lean -- Idle
P2177 moderate
System Too Lean Off Idle -- Bank 1
P2178 moderate
System Too Rich Off Idle -- Bank 1
P2179 moderate
Fuel Trim System Stuck Lean (Bank 1)
P2180 moderate
Fuel Trim System Stuck Rich (Bank 1)
P2181 moderate
Cooling System Performance
P2182 moderate
Engine Coolant Temperature Sensor 2 Circuit
P2183 low
Engine Coolant Temperature Sensor 2 Circuit Range/Performance
P2184 low
Engine Coolant Temperature Sensor 2 Circuit Low
P2185 moderate
Engine Coolant Temperature Sensor 2 Circuit High
P2186 moderate
Engine Coolant Temperature Sensor 2 Circuit Low
P2187 serious
System Too Lean at Idle (Bank 1)
P2188 moderate
System Too Rich at Idle -- Bank 1
P2189 moderate
System Too Lean at Idle -- Bank 2
P2190 moderate
System Too Rich at Idle -- Bank 2
P2191 moderate
System Too Lean at Higher Load -- Bank 2
P2192 moderate
System Too Rich at Higher Load (Bank 1)
P2193 moderate
System Too Lean at Higher Load (Bank 2)
P2194 moderate
System Too Rich at Higher Load (Bank 2)
P2195 serious
O2 Sensor Signal Stuck Lean (Bank 1, Sensor 1)
P2196 serious
O2 Sensor Signal Stuck Rich (Bank 1, Sensor 1)
P2197 moderate
O2 Sensor Signal Biased/Stuck Rich (Bank 2, Sensor 1)
P2198 moderate
O2 Sensor Signal Biased/Stuck Lean (Bank 2, Sensor 1)
P2199 low
Intake Air Temperature Sensor 1/2 Correlation
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