My 2007 jeep liberty shows code 6ASCAP what does it mean

SOURCE: jeep liberty 2007, window regulator died. What is

take off door panel and tap with a small hammer

SOURCE: i have code P0320 and P0340 on my jeep liberty

P0320 Ignition Engine Speed Input Circuit malfunction

P0340 Camshaft Position Sensor Circuit malfunction

SOURCE: What does the code 1494 mean for a Jeep liberty

P1494-LEAK DETECTION PUMP SW OR MECHANICAL FAULT

keith howells

• 160 Answers
• Posted on Mar 05, 2011

SOURCE: I have a P0320, P0455

This problem maybe caused by a split vacuum pipe or vacuum valve. Listen to the engine running (around intake manifold) and see if you can detect a loud hissing noise. Replace any pipes that are split or broken. Hope this helps...

SOURCE: My Jeep Liberty Has a 3.7 L V6, it has problems

CARB (California Air Resources Board) has a consistent policy regarding monitoring knock (Ks) sensors but vehicle manufacturers don't have a consistent way of using knock sensor circuitry. There are generally two methods that manufacturers have for using the knock sensor.
In the first design, which is found in most vehicles, the knock sensor plays an active role in controlling ignition timing. In this system, the PCM is advancing ignition timing until knock occurs and then retards timing slightly. This system runs on the verge of engine knock at all times. In this system the function of the knock sensor circuit is critical. If the sensor malfunctioned, precise ignition timing control could not be achieved.

A "dead" sensor circuit would not be able to detect actual knock, timing would be overly advanced, and NOX exhaust emissions would increase. For this reason, manufacturers that use the knock sensor in this manner are required to monitor this sensor and light the MIL light when a malfunction is detected.

In the second design, the knock sensor plays a very passive role and is really only on the engine for protection purposes. The various engine sensors send their information to the PCM to determine ignition timing. The PCM uses this information to control the ignition timing based on look-up tables stored in its memory. If ignition knock is detected, the PCM will take action and ****** the timing a few degrees. This type of control is generally used to control spark knock caused by changes in fuel octane.

Used in this way, the knock sensor is less critical to emissions and may not even have a measurable emission impact. Unlike the first design, a "dead" knock sensor in this system will have little to no effect on the operation of the engine. Manufacturers that use this design are not required to monitor the sensor under EPA OBDII regulations and will not turn on the MIL if the P0325 DTC is set.
Remember, this sensor does not change the operation of the engine. The customer will not notice any change in the way the vehicle operates. The knock sensor system has a one trip detection logic and WILL NOT turn on the MIL or store Freeze Frame data.

How to Diagnose P0325
Most technicians know how this type of sensor operates. Its element produces a voltage when the sensor picks up a vibration, usually caused by engine detonation.Technicians then check the ohmic value of the sensor.
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