turn the key to run (not start) 2 times with in 5 seconds and watch the odometer
Most vehicles after 1995 incorporate the OBDII system and you have to use a scanner to retreive the codes. However, there are auto parts stores such as Auto Zone that will scan it for you ay no charge.
You can't, you must use a scanner.
The engine doesn't need to be running. Just turn on the keyswitch with the code scanner connected.
It means you have a malfunction in the cars engine. If it blinks stop ASAP!.. You need a scanner to pull the codes to get to what exactly is wrong
That is not a valid code number, it should be a "P" followed by four numbers. example P0123
To retrieve diagnostic trouble codes (DTCs) from a Jeep Liberty, you can use an OBD-II scanner. Simply plug the scanner into the OBD-II port, typically located under the dashboard near the driver's seat. Turn on the ignition without starting the engine, and follow the scanner's prompts to read the codes. Alternatively, you can also use the "key dance" method by turning the ignition on and off several times to display codes on the odometer, but using a scanner is more reliable.
I am sorry but you do not without the proper equipment.
What does a engine scanner look like
Trouble code P0340 means: Camshaft position sensor "A" circuit malfunction (Bank 1)
To reset the engine malfunction light on a Renault Clio 1.4 16v, you can use an OBD-II scanner to clear the fault codes stored in the vehicle's ECU. Simply connect the scanner to the OBD-II port, read the codes, and then select the option to clear or reset them. Alternatively, you can disconnect the car battery for about 15 minutes to reset the ECU, but this may also reset other settings. Always ensure that the underlying issue causing the malfunction light is resolved before resetting.
Trouble code P0320 means:Ignition/distibutor engine speed input circuit malfunction. and you can use the Ford obd scanner to repair, you can DIY, it is easy.
A lot of parts stores will check it for free