Code | What it means
30 | Sensor heater relay problem
36 | Sensor heater relay problem
106 | MAP sensor voltage out of range detected at startup
107 | MAP sensor voltage too low
108 | MAP sensor voltage too high
112 | Intake air temperature sensor voltage low
113 | Intake air (charge) temperature sensor voltage high
116 | Coolant temparature sensor reading doesn't make sense
117 | Engine coolant temperature sensor voltage low
118 | Engine coolant temperature sensor voltage high
121 | Throttle position sensor and MAP sensor disagree with each other
122 | Throttle position sensor voltage low
123 | Throttle position sensor voltage high
125 | Taking too long to reach proper operating temparature and switch to energy-efficient mode
129 | Bad barometric pressure sensor (thanks, John King)
130 | Sensor heater relay problem
131 | Oxygen sensor seems to be shorted out or broken
147 | Oxygen sensor heater element not working properly (this device helps to reduce emissions more quickly)
151 | Oxygen sensor voltage problem - short circuit to ground?
152 | Oxygen sensor voltage problem - short circuit to active 12V?
153 | Oxygen sensor response too slow
154 | Oxygen sensor does not show either a rich or lean condition - may need replacement
155 | Oxygen sensor heater element not working properly (this device helps to reduce emissions more quickly)
157 | Oxygen sensor voltage problem - short circuit to ground?
158 | Oxygen sensor voltage problem - short circuit to active 12V?
159 | Oxygen sensor response too slow
160 | Oxygen sensor does not show either a rich or lean condition - may need replacement
161 | Oxygen sensor heater element not working properly (this device helps to reduce emissions more quickly)
171 | The oxygen sensor is saying that the system air/fuel mix is far too lean (too much fuel is being added as a correction).
172 | The oxygen sensor is saying that the system air/fuel mix is far too rich (too much air is being added as a correction).
174 | The oxygen sensor is saying that the system air/fuel mix is far too lean (too much fuel is being added as a correction).
175 | The oxygen sensor is saying that the system air/fuel mix is far too rich (too much air is being added as a correction).
176 | Flex fuel sensor can't be seen
178 | Flex fuel sensor problem
179 | Flex fuel sensor problem
182 | Compressed natural gas temperature sensor problem
183 | Compressed natural gas temperature sensor problem
201 | Injector #1 control circuit problem (open or shorted)
202 | Injector #2 control circuit problem (open or shorted)
203 | Injector #3 control circuit problem (open or shorted)
204 | Injector #4 control circuit problem (open or shorted)
300 | Misfire detected in multiple cylinders.
301 | Misfire detected in cylinder #1.
302 | Misfire detected in cylinder #2.
303 | Misfire detected in cylinder #3.
304 | Misfire detected in cylinder #4.
320 | Crankshaft position sensor reference signal cannot be found while the engine is cranking.
325 | Knock sensor (#1) signal is wrong.
330 | Knock sensor (#2) signal is wrong.
340 | No camshaft signal being received by the computer
350 | A coil is drawing too much current.
351 | Coil #1 is not reaching peak current at the right time
352 | Coil #2 is not reaching peak current at the right time
353 | Coil #3 is not reaching peak current at the right time
354 | Coil #4 is not reaching peak current at the right time
401 | A required change in air/fuel mixture was not detected during diagnostic test.
403 | An problem was detected in the EGR solenoid control circuit.
404 | The EGR sensor's reported position makes no sense
405 | EGR position sensor voltage wrong.
406 | EGR position sensor voltage wrong.
412 | The secondary air solenoid control circuit seems bad (this is used for the aspirator).
420 | The catalyst seems inefficient (#1).
432 | The catalyst seems inefficient (#2).
441 | Evaporative purge flow system not working properly
442 | A leak has been detected in the evaporative system!
443 | Evaporative purge flow system solenoid not working properly
455 | A large leak has been detected in the evaporative system!
456 | A small leak has been detected in the evaporative system!
460 | The fuel level sender is not reporting any change over a long distance. Something seems wrong.
461 | The fuel level sender is not reporting any change over a long time. Something seems wrong.
462 | Fuel level sender voltage wrong.
463 | Fuel level sender voltage wrong.
500 | Haven't heard from the speed sensor lately.
505 | The idle speed air control motor doesn't seem to be working correctly.
522 | Oil pressure sensor problems
523 | Oil pressure sensor problems
551 | The power steering switch may not be working. (Neons: high pressure is showing up at high speed)
600 | Oh-oh! The coprocessors aren't talking to each other within the computer!
601 | Internal computer error!
604 | Internal computer error! (RAM check)
605 | Internal computer error! (ROM)
615 | Starter relay circuit problem
622 | Generator field control problem
645 | A/C clutch relay circuit problem.
700 | The automatic transmission computer has a problem - ask it what's going on. I don't know. All I know is that the transmission asked me to turn on the MIL (malfunction indicator light). I did it, didn't I? So why are you bugging ME? ... you may have error code 1776, too. I'd check for that. It's patriotic and more informative.
703 | Brake switch circuit information seems wrong.
711 | Based on the transmission temperature and its operations, it looks like the transmission temperature sensor's gone bad.
712 | Transmission fluid temperature sensor voltage wrong.
713 | Transmission fluid temperature sensor voltage wrong.
720 | The Output Shaft Speed Sensor doesn't match the reported vehicle speed.
740 | The engine's running faster than it should for these speeds, so I think thetorque convertor clutch lock-up system is bad
743 | Torque converter clutch (part throttle unlock) solenoid circuit problem - shift solenoid C electrical fault
748 | Governor Pressure Solenoid circuit problem (Transmission relay circuit problem in Jeep RE transmissions)
751 | Overdrive override switch has been pressed for over five minutes. Just thought you should know.
753 | Overdrive solenoid control circuit problem (transmission relay circuit in Jeep RE transmissions.)
756 | Shift solenoid B (2-3) fault
783 | The overdrive solenoid can't go from 3rd gear to the overdrive gear.
801 | Transmission reverse gear lockout solenoid circuit problem!
833 | Problem with the clutch-released switch circuit?