P21xx trouble codes
- P2101 Throttle Actuator Control Motor Circuit Range/Performance
- P2122 Accelerator Pedal Position Sensor D Circuit Low
- P2138 Accelerator Pedal Position Sensor D/E Voltage Correlation
- P2177 System Too Lean Off Idle (Bank 1)
- P2178 System Too Rich Off Idle (Bank 1)
- P2179 System Too Lean Off Idle (Bank 2)
- P2180 System Too Rich Off Idle (Bank 2)
- P2187 System Too Lean at Idle (Bank 1)
- P2188 System Too Lean at Idle (Bank 1)
- P2189 System Too Rich at Idle (Bank 1)
- P2190 System Too Rich at Idle (Bank 1)
- P2191 System Too Lean at Idle (Bank 2)
- P2193 System Too Rich at Idle (Bank 2)
- P2194 O2 Sensor Signal Stuck Lean (Bank 2 Sensor 1)
- 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)
- P21DD Reductant (DEF/AdBlue) Level Too Low in SCR System