Taken from our friends on LXFORUMS.
If you have been having CEL's and want to know what they are for, just do this...It works on all Magnums 2.7-6.1's...Non-evic equipped Mag's will show the codes where the odometer reading is.
Get in the car, close the door. Perform the following steps fairly quickly (less than 3 seconds) :
Turn key to ON
then back to ACC
then to ON
then back to ACC
then to ON
If there are any stored codes, they will appear immediately, in place of the odometer. For instance an "INTAKE AIR TEMPERATURE SENSOR CIRCUIT HIGH" error will set a code of P0113.
Once the codes have been displayed, you'll see "-----". If there are no trouble codes, the dashes will be the first item displayed.
After a few seconds, the display changes to "-dOnE-".
Powertrain Codes:
DTC P0030 HO2S Heater Control Circuit Bank 1 Sensor 1
DTC P0031 HO2S Heater Circuit Low Voltage Bank 1 Sensor 1
DTC P0032 HO2S Heater Circuit High Voltage Bank 1 Sensor 1
DTC P0036 HO2S Heater Control Circuit Bank 1 Sensor 2
DTC P0037 HO2S Heater Circuit Low Voltage Bank 1 Sensor 2
DTC P0038 HO2S Heater Circuit High Voltage Bank 1 Sensor 2
DTC P0050 HO2S Heater Circuit Bank 2 Sensor 1
DTC P0051 HO2S Heater Circuit Low Voltage Bank 2 Sensor 1
DTC P0052 HO2S Heater Circuit High Voltage Bank 2 Sensor 1
DTC P0056 HO2S Heater Circuit Bank 2 Sensor 2
DTC P0057 HO2S Heater Circuit Low Voltage Bank 2 Sensor 2
DTC P0058 HO2S Heater Circuit High Voltage Bank 2 Sensor 2
DTC P0100 MAF Sensor Ckt. Insufficient Activity
DTC P0101 Mass Air Flow (MAF) Sensor Performance
DTC P0102 Mass Air Flow (MAF) Sensor Circuit Low Frequency
DTC P0103 Mass Air Flow (MAF) Sensor Circuit High Frequency
DTC P0104 Mass Air Flow Circuit Intermittent
DTC P0105 MAP Sensor Circuit Insufficient Activity
DTC P0106 Manifold Absolute Pressure (MAP) System Performance
DTC P0107 Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage
DTC P0108 Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage
DTC P0109 Manifold Absolute Pressure Circuit Intermittent
DTC P0110 Intake Air Temperature (IAT) Sensor Circuit
DTC P0111 Intake Air Temperature (IAT) Sensor Performance
DTC P0112 Intake Air Temperature (IAT) Sensor Circuit Low Voltage
DTC P0113 Intake Air Temperature (IAT) Sensor Circuit High Voltage
DTC P0114 Intake Air Temperature Circuit Intermittent
DTC P0115 Engine Coolant Temperature (ECT) Sensor Circuit
DTC P0116 Engine Coolant Temperature (ECT) Sensor Performance
DTC P0117 Engine Coolant Temperature (ECT) Sensor Circuit Low Voltage
DTC P0118 Engine Coolant Temperature (ECT) Sensor Circuit High Voltage
DTC P0119 Engine Coolant Temperature Circuit Intermittent
DTC P0120 TP System Performance
DTC P0121 TP Sensor Circuit Insufficient Activity
DTC P0122 Throttle Position (TP) Sensor Circuit Low Voltage
DTC P0123 Throttle Position (TP) Sensor Circuit High Voltage
DTC P0124 Throttle Position Sensor 1 Circuit Intermittent
DTC P0125 Engine Coolant Temperature (ECT) Insufficient for Closed Loop Fuel Control
DTC P0126 Insufficient ECT for Stable Operation
DTC P0128 Coolant Thermostat
DTC P0130 HO2S Circuit Closed Loop (CL) Performance Bank 1 Sensor 1
DTC P0131 HO2S Circuit Low Voltage Bank 1 Sensor 1
DTC P0132 HO2S Circuit High Voltage Bank 1 Sensor 1
DTC P0133 HO2S Slow Response Bank 1 Sensor 1
DTC P0134 HO2S Circuit Insufficient Activity Bank 1 Sensor 1
DTC P0135 HO2S Heater Performance Bank 1 Sensor 1
DTC P0136 HO2S Circuit Bank 1 Sensor 2
DTC P0137 HO2S Circuit Low Voltage Bank 1 Sensor 2
DTC P0138 HO2S Circuit High Voltage Bank 1 Sensor 2
DTC P0139 HO2S Slow Response Bank 1 Sensor 2
DTC P0140 HO2S Circuit Insufficient Activity Bank 1 Sensor 2
DTC P0141 HO2S Heater Performance Bank 1 Sensor 2
DTC P0142 HO2S Circuit Bank 1 Sensor 3
DTC P0143 HO2S Circuit Low Voltage Bank 1 Sensor 3
DTC P0144 HO2S Circuit High Voltage Bank 1 Sensor 3
DTC P0145 HO2S Circuit Bank 1 Sensor 2 Slow Response
DTC P0146 HO2S Circuit Insufficient Activity Bank 1 Sensor 3
DTC P0147 HO2S Heater Performance Bank 1 Sensor 3
DTC P0150 HO2S Circuit Closed Loop (CL) Performance Bank 2 Sensor 1
DTC P0150 HO2S Circuit Bank 2 Sensor 1
DTC P0151 HO2S Circuit Low Voltage Bank 2 Sensor 1
DTC P0152 HO2S Circuit High Voltage Bank 2 Sensor 1
DTC P0153 HO2S Slow Response Bank 2 Sensor 1
DTC P0154 HO2S Circuit Insufficient Activity Bank 2 Sensor 1
DTC P0155 HO2S Heater Performance Bank 2 Sensor 1
DTC P0156 HO2S Circuit Bank 2 Sensor 2
DTC P0157 HO2S Circuit Low Voltage Bank 2 Sensor 2
DTC P0158 HO2S Circuit High Voltage Bank 2 Sensor 2
DTC P0159 HO2S Slow Response Bank 2 Sensor 2
DTC P0160 HO2S Circuit Insufficient Activity Bank 2 Sensor 2
DTC P0161 HO2S Heater Performance Bank 2 Sensor 2
DTC P0162 HO2S Circuit Bank 2 Sensor 3
DTC P0163 HO2S Circuit Bank 2 Sensor 3 Low Voltage
DTC P0164 HO2S Circuit Bank 2 Sensor 3 High Voltage
DTC P0165 HO2S Circuit Bank 2 Sensor 3 Slow Response
DTC P0166 HO2S Circuit Bank 2 Sensor 3 No Activity Detected
DTC P0167 HO2S Heater Circuit Bank 2 Sensor 3
DTC P0169 Fuel Composition Sensor
DTC P0170 Fuel Trim Bank 1
DTC P0171 Fuel Trim System Lean Bank 1
DTC P0172 Fuel Trim System Rich Bank 1
DTC P0173 Fuel Trim Bank 2
DTC P0174 Fuel Trim System Lean Bank 2
DTC P0175 Fuel Trim System Rich Bank 2
DTC P0176 Fuel Composition Sensor Circuit
DTC P0177 Fuel Composition Sensor Circuit Performance
DTC P0178 Fuel Composition Sensor Circuit Low Voltage
DTC P0179 Fuel Composition Sensor Circuit High Voltage
DTC P0180 Fuel Temperature Sensor 1 Circuit
DTC P0181 Fuel Temp. Sensor 1 Circuit Performance
DTC P0182 Fuel Temperature Sensor Circuit Low Voltage
DTC P0183 Fuel Temperature Sensor Circuit High Voltage
DTC P0184 Fuel Temperature Sensor 1 Circuit Intermittent
DTC P0185 Fuel Temperature Sensor 2 Circuit
DTC P0186 Fuel Temp. Sensor 2 Circuit Performance
DTC P0187 Fuel Temperature Sensor 2 Circuit Low Voltage
DTC P0188 Fuel Temperature Sensor 2 Circuit High Voltage
DTC P0189 Fuel Temperature Sensor 2 Circuit Intermittent
DTC P0190 Fuel Rail Pressure Sensor Circuit
DTC P0191 Fuel Rail Pressure Sensor Circuit Performance
DTC P0192 Fuel Rail Pressure Sensor Circuit Low Voltage
DTC P0193 Fuel Rail Pressure Sensor Circuit High Voltage
DTC P0194 Fuel Rail Pressure Sensor Circuit Intermittent
DTC P0195 Engine Oil Temperature Sensor
DTC P0196 Engine Oil Temperature Sensor Performance
DTC P0197 Engine Oil Temperature Sensor Low Voltage
DTC P0198 Engine Oil Temperature Sensor High Voltage
DTC P0199 Engine Oil Temperature Sensor Intermittent
DTC P0200 Injector Control Circuit
DTC P0201 Injector 1 Control Circuit
DTC P0202 Injector 2 Control Circuit
DTC P0203 Injector 3 Control Circuit
DTC P0204 Injector 4 Control Circuit
DTC P0205 Injector 5 Control Circuit
DTC P0206 Injector 6 Control Circuit
DTC P0207 Injector 7 Control Circuit
DTC P0208 Injector 8 Control Circuit
DTC P0209 Injector 9 Control Circuit
DTC P0210 Injector 10 Control Circuit
DTC P0211 Injector 11 Control Circuit
DTC P0212 Injector 12 Control Circuit
DTC P0213 Cold Start Injector 1
DTC P0214 Cold Start Injector 2
DTC P0215 Engine Shutoff Control Circuit
DTC P0216 Injection Timing Control Circuit
DTC P0217 Engine Overtemp Condition
DTC P0218 Transmission Fluid Overtemperature
DTC P0219 Engine Overspeed Condition
DTC P0220 APP Sensor 2 Circuit
DTC P0221 APP (Throttle Position) Sensor 2 Circuit Performance
DTC P0222 APP (Throttle Position) Sensor 2 Circuit Low Voltage
DTC P0223 APP (Throttle Position) Sensor 2 Circuit High Voltage
DTC P0224 Throttle Position Sensor 2 Intermittent
DTC P0225 APP Sensor 3 Circuit
DTC P0226 APP Sensor 3 Circuit Performance
DTC P0227 APP Sensor 3 Circuit Low Voltage
DTC P0228 APP Sensor 3 Circuit High Voltage
DTC P0229 Throttle Position Sensor 3 Intermittent
DTC P0230 Fuel Pump Relay Control Circuit
DTC P0231 Fuel Pump Feedback Circuit Low Voltage
DTC P0232 Fuel Pump Feedback Circuit High Voltage
DTC P0233 Fuel Pump Secondary Circuit Intermittent
DTC P0234 TC Engine Overboost Condition
DTC P0235 Turbocharger Boost Sensor 1 Circuit
DTC P0236 TC Boost System
DTC P0237 TC Boost Sensor Circuit Low Voltage
DTC P0238 TC Boost Sensor Circuit High Voltage
DTC P0239 Turbocharger Boost Sensor 2 Circuit
DTC P0240 Turbocharger Boost Sensor 2 Performance
DTC P0241 Turbocharger Boost Sensor 2 Circuit Low Voltage
DTC P0242 Turbocharger Boost Sensor 2 Circuit High Voltage
DTC P0243 Turbocharger Wastegate Solenoid 1
DTC P0244 Turbocharger Wastegate Solenoid 1 Performance
DTC P0245 Turbocharger Wastegate Solenoid 1 Low Voltage
DTC P0246 Turbocharger Wastegate Solenoid 1 High Voltage
DTC P0247 Turbocharger Wastegate Solenoid 2
DTC P0248 Turbocharger Wastegate Solenoid 2 Performance
DTC P0249 Turbocharger Wastegate Solenoid 2 Low Voltage
DTC P0250 Turbocharger Wastegate Solenoid 2 High Voltage
DTC P0251 Injection Pump Fuel Metering Control "A" Malfunction (Cam/Rotor/Injector)
DTC P0252 Injection Pump Fuel Metering Control "A" Range/Performance (Cam/Rotor/Injector)
DTC P0253 Injection Pump Fuel Metering Control "A" Low (Cam/Rotor/Injector)
DTC P0254 Injection Pump Fuel Metering Control "A" High (Cam/Rotor/Injector)
DTC P0255 Injection Pump Fuel Metering Control "A" Intermittent (Cam/Rotor/Injector)
DTC P0256 Injection Pump Fuel Metering Control "B" Malfunction (Cam/Rotor/Injector)
DTC P0257 Injection Pump Fuel Metering Control "B" Range/Performance (Cam/Rotor/Injector)
DTC P0258 Injection Pump Fuel Metering Control "B" Low (Cam/Rotor/Injector)
DTC P0259 Injection Pump Fuel Metering Control "B" High (Cam/Rotor/Injector)
DTC P0260 Injection Pump Fuel Metering Control "B" Intermittent (Cam/Rotor/Injector)
DTC P0261 Cylinder 1 Injector Circuit Low
DTC P0262 Cylinder 1 Injector Circuit High
DTC P0263 Cylinder 1 Contribution/Balance Fault
DTC P0264 Cylinder 2 Injector Circuit Low
DTC P0265 Cylinder 2 Injector Circuit High
DTC P0266 Cylinder 2 Contribution/Balance Fault
DTC P0267 Cylinder 3 Injector Circuit Low
DTC P0268 Cylinder 3 Injector Circuit High
DTC P0269 Cylinder 3 Contribution/Balance Fault
DTC P0270 Cylinder 4 Injector Circuit Low
DTC P0271 Cylinder 4 Injector Circuit High
DTC P0272 Cylinder 4 Contribution/Balance Fault
DTC P0273 Cylinder 5 Injector Circuit Low
DTC P0274 Cylinder 5 Injector Circuit High
DTC P0275 Cylinder 5 Contribution/Balance Fault
DTC P0276 Cylinder 6 Injector Circuit Low
DTC P0277 Cylinder 6 Injector Circuit High
DTC P0278 Cylinder 6 Contribution/Balance Fault
DTC P0279 Cylinder 7 Injector Circuit Low
DTC P0280 Cylinder 7 Injector Circuit High
DTC P0281 Cylinder 7 Contribution/Balance Fault
DTC P0282 Cylinder 8 Injector Circuit Low
DTC P0283 Cylinder 8 Injector Circuit High
DTC P0284 Cylinder 8 Contribution/Balance Fault
DTC P0285 Cylinder 9 Injector Circuit Low
DTC P0286 Cylinder 9 Injector Circuit High
DTC P0287 Cylinder 9 Contribution/Balance Fault
DTC P0288 Cylinder 10 Injector Circuit Low