Chrysler engine codes - from the late 1990s and up

[TerryMason]

Sometimes you can get computer codes by turning the key on OFF and then rapidly do OFF-ON-OFF-ON-OFF-ON (on some cars you have to do four or five, not three, OFF-ON cycles). Other times, you may just have to connect a OBD scanner.

For the 1999 Jeep Grand Cherokee and up, you do the switching the key on and off 3 times, but not quickly. You turn it to on so the odometer turns on, turn it off, and then back on, wait for the light to turn on, etc. On the fourth time you'll get a code, or you'll get the word "done."

Here is a list of Chrysler computer codes:

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?

 

[TerryMason]

And the rest:

Code | What it means
1192 | Inlet air temperature sensor voltage is wrong
1193 | Inlet air temperature sensor voltage is wrong
1194 | Oxygen sensor heater performance is faulty
1195 | Oxygen sensor is slow
1196 | The oxygen sensor switched too slowly (bank 2).
1197 | The oxygen sensor switched too slowly (bank 1).
1198 | Radiator coolant temperature sensor voltage is wrong.
1199 | Radiator coolant temperature sensor voltage is wrong.
1281 | The engine is staying cold too long - check your thermostat.
1282 | The fuel pump relay circuit seems to be having a problem.
1288 | The intake manifold short runner tuning valve circuit seems to be having a problem.
1289 | There's a problem in the manifold tuning valve solenoid control circuit.
1290 | Compressed natural gas system pressure is too high
1291 | The heated air intake sensor does not seem to be working.
1292 | Natural gas pressure sensor issue
1293 | Natural gas pressure sensor issue
1294 | Can't get to target engine speed, check for vacuum leaks and idle speed motor issues.
1295 | The throttle position sensor doesn't seem to be getting enough electricity.
1296 | The MAP sensor doesn't seem to be getting enough electricity.
1297 | The MAP sensor doesn't change its reading when the engine is running!
1298 | During wide-open throttle, the engine runs lean.
1299 | MAP Sensor and Throttle Position Sensor signals don't match, check for a vacuum leak.
1388 | Auto shutdown relay circuit problems?
1389 | No Z1 or Z2 voltage seen by the computer when the auto shutdown relay is used.
1390 | Cam and crank signals don't match - did the timing belt skip a tooth?
1391 | Sometimes, I can't see the crank or cam sensor signal.
1398 | I can see the Crank Sensor's signal when I prepare for Misfire Diagnostics. Try replacing it.
1399 | Problem in the Wait to Start Lamp circuit - (diesels only?)
1403 | EGR position sensor not getting (enough) voltage.
1476 | Too little secondary air injection during aspirator test.
1477 | Too much secondary air injection during aspirator test.
1478 | Battery temperature sensor voltage wrong.
1479 | Transmission fan relay circuit problems?
1480 | PCV solenoid circuit problems?
1481 | Transmission RPM pulse generator signal for misfire detection seems wrong.
1482 | Catalyst temperature sensor circuit shorted low.
1483 | Catalyst temperature sensor circuit shorted high.
1484 | The catalyst seems to be overheating!
1485 | Air injection solenoid circuit problems.
1486 | Pinched or blocked hose in the evaporative hose system.
1487 | Control circuit of the #2 high-speed radiator fan control relay is having problems.
1488 | Auxiliary 5-volt sensor feed is too low.
1489 | High speed radiator fan control circuit problem.
1490 | Low speed radiator fan control circuit problem.
1491 | Radiator fan control circuit problem (may be solid state relays as well as other circuits).
1492 | Ambient or battery temperature sensor voltage wrong
1493 | Ambient or battery temperature sensor voltage wrong
1494 | Leak Detection Pump (LDP) pressure switch problem - electrical or the pump itself.
1495 | Leak Detection Pump (LDP) pressure switch problem - the solenoid circuit.
1496 | Sensor feed is below an acceptable limit. (under 4v for 4 seconds - should be 5v).
1498 | High speed radiator fan control circuit problem. (#3 control relay)
1594 | Voltage too high in charging system.
1595 | Speed control vacuum or vent solenoid control circuits shorted or lost.
1596 | Speed control switch always high
1597 | Speed control switch always low
1598 | A/C pressure sensor voltage high
1599 | A/C pressure sensor voltage low
1681 | No messages received from the cluster control module (dashboard computer).
1682 | Charging system doesn't seem to be working well. Check alternator, etc.
1683 | Speed control servo power control circuit problem.
1684 | The battery has been disconnected within the last 50 starts.
1685 | Invalid key received from the Smart Key Immobilizer Module.
1686 | No messages received from the Smart Key Immobilizer Module.
1687 | No messages received from the Mechanical Instrument Cluster module.
1693 | The companion engine control module has shown a fault.
1694 | No messages received from the powertrain control module-Aisin transmission.
1695 | No messages received from the body control module.
1696 | Unsuccessful attempt to write to an EEPROM location!
1697 | Unsuccessful attempt to update Service Reminder Indicator (SRI or EMR) mileage!
1698 | No messages received from the electronic transmission control module or the Aisin transmission controller.
1719 | Transmission 2-3 gear lockout solenoid control circuit problem.
1740 | Either the tcc solenoid or overdrive solenoid systems doesn't seem to be making much sense.
1756 | Transmission control pressure not equal to target. (Mid pressure problem)
1757 | Transmission control pressure not equal to target. (Zero pressure problem)
1762 | The Governor Pressure Sensor input was too high or too low for 3 consecutive park/neutral calibrations.
1763 | The Governor Pressure Sensor input is too high
1764 | The Governor Pressure Sensor input is too low.
1765 | Open or short in the Transmission Relay control circuit.
1776 | Chrysler Solenoid Switch Valve Latched in LR Position (this is a transmission issue which may involve replacing the valve body and solenoid pack; on some models there is a TSB on this problem so be firm with your dealer / Chrysler).
1899 | The Park/Neutral switch seems to be stuck!