The computer logs this code when the mass airflow sensor indicates more airflow than expected. Is the engine idling high? It could be that the idle air control valve is jammed open. Or, there could be another excessive air flow path downstream of the airflow sensor. Check all hoses connected to the inlet duct between the airflow sensor and the throttle body. Are any of them connected to the intake manifold?
The 2003 Jeep Liberty idles good and will run for a few minutes and shuts off. We are checking the vacum hoses for leaks. Thank you for your help.
You will need to figure out why it is shutting off. Is it losing fuel pressure?
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SOURCE: 2003 jeep liberty air bag light on is it easy to fix
The system needs to be checked for cades. Airbag codes are pulled out
of the ECU with the use of a scanner tool. A good auto mechanic shop
will have this or you can go to the dealer. YOU SHOULD NOT TRY TO
REPAIR THIS YOURSELF,YOU COULD ACTIVATE THE AIRBAG!!!!!
SOURCE: 2003 Jeep Liberty heater fan problem
It is the blower motor resistor. Look under the passanger side dash and locate the fan housing (looks round and black in color. Then locate the resistor it will be in that housing usually withtwo ten millimeter nuts or two simple screws holding it in. unplug the harness to the resistor and remove the resistor. Part store price is approx. 50.00. Note: on aftermarket (not Jeep) resistor sometimes you have to modify the housing a little to get it in. Hope this helps.
SOURCE: 2003 3.7 Liberty check engine light for crank sensor
2003 3.7 Liberty check engine light for crank....what? sensor? You have scanned it?
SOURCE: PO455 odb scan code evap. system large leak. 2003
you need a smoke machine to fill evap sysytem and it will leak smoke out where the leak is to many tight places to look without
SOURCE: 2004 - JEEP LIBERTY SPORT
P0122 Code - Throttle Position Sensor/Switch A Circuit Low Input
A P0122 code means that the the car's computer has detected that the TPS (throttle position sensor) is reporting too low a voltage. On some vehicles that lower limit is 0.17 - 0.20 volts (V).
Did you adjust it when you installed it? If the signal value is less than .17V then the PCM sets this code. Could be an open or a short to ground in the signal circuit. Or you may have lost the 5Volt reference voltage.
Symptoms may include:
* Rough or low idle
* Stalling
* Surging
* No/little acceleration
* other symptoms may also be present
Causes: A code P0122 may mean that one or more of the following has happened:
* TPS not mounted securely
* TPS circuit short to ground or another wire
* Faulty TPS
* Damaged computer (PCM)
Possible Solutions: Some recommended troubleshooting and repair steps are:
* Carefully check the throttle position sensor (TPS), wiring connector, and wiring for breaks, etc. Repair or replace as necessary
* Check the voltage at the TPS (refer to a service manual for your vehicle for specific information). If the voltage is too low that is indicative of a problem. Replace if necessary.
* If recently replaced the TPS may need to be adjusted. On some vehicles the installation instructions call for the TPS to be properly aligned or adjusted, consult a repair manual for specifics.
* If there are no symptoms at all, the problem may be intermittent and clearing the code may resolve the issue temporarily. If this is the case then you should definitely check the wiring to be sure it's not rubbing on anything, grounding, etc. The code may come back.
Hope helps (remember to rate this answer).
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