DFFX fault codes
5,361 codes · 6 vehicle records · 0 ECU records · 0 live-data parameters
Codes 5,361
| Code | Description | Brands | System |
|---|---|---|---|
| P2194 | System Too Rich at Higher Load (Bank 2) | 30 | Powertrain |
| P2195 | The upstream oxygen is too lean when accelerating and enriching it. | 42 | Powertrain |
| P2196 | O2 Sensor Signal Biased/Stuck Rich (Bank 1 Sensor 1) | 42 | Powertrain |
| P2197 | O2 Sensor Signal Biased/Stuck Lean (Bank 2 Sensor 1) | 38 | Powertrain |
| P2198 | Oxygen (Lambda) sensor B2 S1: signal too high (rich) | 35 | Powertrain |
| P2199 | Intake Air Temperature Sensor 1/2 Correlation | 32 | Powertrain |
| P21DB | Compressed Natural Gas (CNG) Injector Line Voltage Low (Cylinder 1) | 19 | Powertrain |
| P21DC | Compressed Natural Gas (CNG) Injector Line Voltage High (Cylinder 1) | 20 | Powertrain |
| P21DE | Compressed Natural Gas (CNG) Injector Line Voltage Low (Cylinder 2) | 19 | Powertrain |
| P21DF | Compressed Natural Gas (CNG) Injector Line Voltage High (Cylinder 2) | 20 | Powertrain |
| P21E0 | Compressed Natural Gas (CNG) Injector Line Voltage Low (Cylinder 3) | 19 | Powertrain |
| P21E1 | Compressed Natural Gas (CNG) Injector Line Voltage High (Cylinder 3) | 19 | Powertrain |
| P21E2 | Compressed Natural Gas (CNG) Injector Line Voltage Low (Cylinder 4) | 16 | Powertrain |
| P21E3 | Compressed Natural Gas (CNG) Injector Line Voltage High (Cylinder 4) | 16 | Powertrain |
| P2200 | NOx Sensor Circuit Bank 1 | 33 | Powertrain |
| P2201 | Input voltage is higher than 360 volts | 30 | Powertrain |
| P2202 | Output voltage is less than 250 volts | 29 | Powertrain |
| P2203 | NOx Sensor Circuit High (Bank 1 Sensor 1) | 31 | Powertrain |
| P2204 | DC/DC converter internal temperature is higher than 90°C | 27 | Powertrain |
| P2205 | NOx Sensor Heater Control Circuit/Open (Bank 1 Sensor 1) | 27 | Powertrain |
| P2206 | NOx Sensor Heater Control Circuit Low Bank 1 | 27 | Powertrain |
| P2207 | NOx Sensor Heater Control Circuit High (Bank 1 Sensor 1) | 27 | Powertrain |
| P2208 | NOx Sensor Heater Sense Circuit (Bank 1 Sensor 1) | 28 | Powertrain |
| P2209 | NOx Sensor Heater Sense Circuit Range/Performance (Bank 1 Sensor 1) | 28 | Powertrain |
| P2210 | NOx Sensor Heater Sense Circuit Low (Bank 1 Sensor 1) | 28 | Powertrain |
| P2211 | NOx Sensor Heater Sense Circuit High Bank 1 | 28 | Powertrain |
| P2212 | NOx Sensor Heater Sense Circuit Intermittent Bank 1 | 25 | Powertrain |
| P2213 | NOx sensor circuit bank 2 | 26 | Powertrain |
| P2214 | NOx sensor circuit range/performance bank 2 | 27 | Powertrain |
| P2215 | NOx sensor circuit low bank 2 | 26 | Powertrain |
| P2216 | NOx sensor circuit high bank 2 | 26 | Powertrain |
| P2217 | NOx sensor circuit intermittent bank 2 | 25 | Powertrain |
| P2218 | NOx sensor heater control circuit/open bank 2 | 25 | Powertrain |
| P2219 | NOx sensor heater control circuit low bank 2 | 25 | Powertrain |
| P2220 | NOx sensor heater control circuit high bank 2 | 25 | Powertrain |
| P2221 | NOx sensor heater sense circuit bank 2 | 25 | Powertrain |
| P2222 | NOx sensor heater sense circuit range/performance bank 2 | 27 | Powertrain |
| P2223 | NOx sensor heater sense circuit low bank 2 | 27 | Powertrain |
| P2224 | NOx sensor heater sense circuit high bank 2 | 26 | Powertrain |
| P2225 | NOx sensor heater sense circuit intermittent bank 2 | 25 | Powertrain |
| P2226 | Barometric Pressure Sensor A Circuit | 37 | Powertrain |
| P2227 | Barometric pressure sensor A circuit range/performance | 35 | Powertrain |
| P2228 | Barometric Pressure Sensor A Circuit Low | 42 | Powertrain |
| P2229 | Short circuit to positive or line break | 42 | Powertrain |
| P222A | Barometric pressure sensor 'B' circuit | 21 | Powertrain |
| P222B | Barometric pressure sensor 'B' circuit range/performance | 22 | Powertrain |
| P222C | Barometric pressure sensor 'B' circuit low | 23 | Powertrain |
| P222D | Barometric pressure sensor 'B' circuit high | 23 | Powertrain |
| P222E | Barometric pressure sensor 'B' circuit intermittent/erratic | 22 | Powertrain |
| P222F | Barometric pressure sensor 'A'/'B' correlation | 20 | Powertrain |
Some brand data is extracted from diagnostic files and may contain manufacturer-specific wording. General SAE J2012 descriptions are used where available.