Question about 1997 Jeep Grand Cherokee

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I have a diagnostic code 340 and 320 on a 1997 Jeep Cherokee. What might the problem be?

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DTC P0340 - Camshaft Position Sensor Circuit Malfunction
Symptoms can include:

  • Hard starting or no start
  • Rough running / misfiring
  • Loss of engine power
Causes:A code P0340 could mean one or more of the following has happened:
  • a wire or connector in the circuit could be grounded/shorted/broken
  • the camshaft position sensor may have failed
  • the PCM may have failed
  • there exists an open circuit
  • the crankshaft position sensor may have failed

Possible Solutions:With a P0340 OBD-II trouble code, diagnosis can be tricky at times. Here are some things to try:
  • Visually inspect all the wiring and connectors in the circuit
  • Check for continuity in the circuit wiring
  • Check the operation (voltage) of the camshaft position sensor
  • Replace the camshaft position sensor as required
  • Check the crankshaft position circuit as well
  • Replace circuit wiring and/or connectors as required
  • Diagnose/replace the PCM as required

DTC P0320 also have with this wrong.

Posted on Jul 13, 2010

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  • Contributor
  • 245 Answers

Po320 ignition distributor speed input circut malfunction'''..............................................................
po 340 No camshaft signal being received by the computer

I would replace the cam sensor then clear the computer

This cam shaft will clear rhe 320 code too

Let me know if i can help more

Posted on Jul 13, 2010

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Posted on Jan 02, 2017

  • 323 Answers

SOURCE: Jeep Grand Cherokee Limited P0700 diagnostic problem

P0700 means there is a transmission fault code in the transmission controller. Since the transmission controller doesn't have a light attached, it tells the engine controller to turn the light on using this code. You'll have to access the transmission controller to further diagnose the problem.

Posted on Jun 14, 2009

seanpwright
  • 2030 Answers

SOURCE: I have a 2005 Jeep Cherokee Laredo. Diagnostic

Implausible Fuel Volume Signal Received

This usually points to a bad PCM (powertrain control module).

Posted on Sep 14, 2009

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  • 52 Answers

SOURCE: 96 Jeep Grand Cherokee diagnostic codes P1762 and

governor pressure sensor in transmission is the likely problem

Posted on Nov 22, 2009

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for additional information on troubleshooting and resolution:
http://rapidshare.com/files/138412864/ServiceManual.Jeep.Grand.Cherokee.1998_by_Parasico.rar

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