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How do you reset the check engine light on a 2002 Jeep Wrangler?
How to Clear Codes on Jeep Wrangler
- Make sure the engine is not running and key is out of the ignition.
- Disconnect the battery terminals.
- Wait 5 minutes.
- Reconnect battery terminals.
- Insert and turn the ignition key to the run position without starting.
- All error codes are cleared and CHECK ENGINE icon disappeared.
How do you reset the check engine light on a Jeep Wrangler?
Put the key in the ignition and turn it to the “On” position for about five seconds. Turn the engine on. The engine warning light will flash and then turn off.
How do I turn off the check engine light on my Jeep?
Resetting the Check Engine Light:
- Make sure the engine is not running and key is out of the ignition.
- Disconnect the battery terminals.
- Wait 5 minutes.
- Reconnect battery terminals.
- Insert and turn the ignition key to the run position without starting.
- All error codes are cleared and CHECK ENGINE icon disappeared.
How do you reset the check engine light on a 2003 Jeep Wrangler?
Connect the tool to the Assembly Line Diagnostic Link (ALDL), usually located under the dash. Check “Resources” for a picture of an ALDL. Turn the key on. Scan the engine for codes and select the option to reset them.
Why is my engine light on in my Jeep Wrangler?
Jeep Wrangler Check Engine Light Flashing Other common reasons for a Check Engine Light are faulty head gasket, a malfunction with the fuel injection system, dirty mass airflow sensor, faulty emissions control part, damaged oxygen sensor, or defective spark plugs to name a few.
What causes check engine light on Jeep Wrangler?
How do you reset the Check Engine light on a Jeep Wrangler?
However, if the check engine light does not go off after repairing then, you need to reset it. If you want to reset the check engine light on your Jeep Wrangler, insert the ignition key without starting the engine and then, turn to the ACC position. This action will power the Jeep’s electronics and computer.
What causes the engine warning light on a Jeep Wrangler?
A Jeep Wrangler Sport comes with a Power Train Control Module (PCM) computer on board that diagnoses problems throughout the vehicle. When the engine warning light illuminates on the instrument panel, this is the result of a trouble code sent to the PCM.
How do you check the engine code on a Jeep Wrangler?
If you want to check the engine codes on your Jeep, it is a very simple task. The first thing you need to do is to insert the key into the ignition and then, turn to the ON position. However, do not start the Jeep. Once you have done the above, push in the key and turn to the ON and OFF position consecutively three times.
What to do if your check engine light is flashing?
Flashing Check Engine Light: If your check engine light is flashing, stop driving your Wrangler and have it towed to your nearest mechanic – you probably have a very serious problem with your car and you risk ruining your engine by driving it.