2000 Jeep Error Codes
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will find the most complete list of Jeep trouble codes available. The code definitions are a good starting point when determining the cause of the service engine light but where do you go from there? We jeep wrangler error codes have a large number of resources to help you repair the problem. Here is how
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we suggest you proceed. Look up your code definition. This tells you where to start testing. If you are unsure of any jeep error codes list abbreviations, check out the acronym list by clicking on the link at the left. Next, read our article Automotive Circuit Testing 101, and if there is an article related to the system you are testing, such
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as Oxygen Sensors or EGR concerns, read these as well. They will provide valuable info! If there is a link to a specific diagnosis strategy for the code then follow that and start testing. If there is no procedure for your manufacturer specific code, then I suggest referring to a similar generic OBD II code (these are listed numerically by system type) to get a good idea of what to look for. ford error codes If at this point you still need assistance use the "Get Help" link and let us know how we can help. We can provide information on component location, specifications, circuit color/location and more. We do ask that you please read the info available on the site first so that we can help reduce repeat questions. So please read our Disclaimer and when you're ready jump in! Also we value your feedback and like to hear stories of unusual fixes or concerns you may have run into with your Check Engine Light, so feel free to share your experiences by using the "Contact Us" link. Let's go! We do our best to update these Jeep check engine light codes as frequently as possible. If you find one missing let us know and we we'll add it immediately! Please use the form on our Contact Page to get in touch with us. We certainly understand how frustrating it can be to look for a code definition and have it not online when you need it. And lets face it, if the service engine light is on then you need it now! It's easiest to use the "Find On This Page" feature of your browser's "Edit" menu to find codes on this page as the list is quite long
light flashes. Start by turning the ignition key to the last stop before it starts, on and off three times within 5 seconds ending in the on position on the third time, ( i.e. on, off, on, off then on
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and leave ), ( OBDII 96-97, 4 times ) . The check engine light will start to
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flash quickly with a small pause in between then a medium pause to indicate the next number in the to digit number and then a nissan error codes long pause before the next set of flashing for the next code. If all is well you will get a code 55 which would read like this: 5 fast flashes, medium pause then a further 5 flashes. This is how all codes https://www.engine-light-help.com/jeep-check-engine-light.html end with is this 55 code if you have air conditioning or with a code 33 without and any other codes would have been before it separated by a long pause. The codes will remain after this test so you can cycle through it as many times as it takes to read them. After a problem has gone the code will be removed after 50 on off key cycles or if the battery left disconnected over night which will cause a code 12 though. http://jeep-xj.info/HowtoECUcodes.htm Code Description Most likely reason 11 No crank signal to computer. Fault in wiring between crankshaft position sensor (CPS) and ECM ( PCM or computer ) or faulty CPS. 12 Battery disconnected. Battery or power to the ECM disconnected in the last 50 key cycles. 13 MAP Sensor. No change in Manifold Absolute Pressure (MAP) between engine off and on. Check circuit and MAP sensor. 14 MAP Sensor. MAP sensor voltage too high or low. Check circuit and sensor. 15 Speed sensor or circuit. No signal detected from speed sensor. Check circuit and sensor. 17 Engine running too cold. Wrong or faulty thermostat. Check also sensor and circuit for fault. 21 Oxygen sensor or circuit. O2 sensor or wiring faulty. 22 Coolant sensor or circuit. Check temp sensor and wiring. 23 Intake air temp or circuit. Check air temp sensor and wiring. 24 Throttle Position Sensor (TPS) Check TPS sensor and wiring. 25 Idle Air Control circuit (IAC) Check IAC sensor and wiring. 26 Injector circuit resistance. Peak injector current has not been reached or injector circuits have resistance 27 Fuel injector control circuit. Will need specialist diagnostics. 31 Evaporative control circuit. Fault in fuel evaporative control circuit or hoses. 33 Air conditioning clutch relay. Wiring to A/C clutch fault. 34 Cruise control circuit. Fault in circuit. 35 Cooling fan relay. Check relay and circuit. 36 Air switch solenoid circuit. Air switch solenoid circuit (non-turbo) or the waste gate solenoid on turbocharged models 37 Torque converter clutch. Needs specialist or deale
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