Question about 2000 Ford Taurus

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Engine code p1309 P/S advice on repair - 2000 Ford Taurus

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  • Tony Chavez Nov 12, 2010

    code p1309 readings were not steady sometimes less then 2 and more then 8 volts replaced CMP and there was no change on the readings, reset code and it came back in about 30 miles----------what else remains to be checked. i also asume that the is OK to be driven in the mean time------it runs good other then the check engin light-----also checked shaft and it seams to be OK


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The definition of this code is:
P1309 Engine Misfire Detection Monitor not enabled

It's a problem with the detection circuitry, not a detection of a engine misfire condition. I found this quickly on the net:
Diagnostic Trouble Code (DTC) P1309 indicates Misfire Detection Monitor is not enabled.

Breakout box installed, PCM disconnected. Connect digital multimeter between PCM test pin 85 and test pins 51 or 103. Bump engine in short burst with the starter without starting engine for at least 10 engine revolutions. Answer this question: Does digital multimeter reading switch between low (less than 2.0 volts DC) and high (greater than 8.0 volts DC)?

If Yes, Verify correct installation by referring to the Powertrain/Engine Group in the Workshop Manual. If the CMP is installed properly, REPLACE PCM. RESTORE vehicle. RERUN Quick Test.

If no, REPLACE CMP sensor. RESTORE vehicle. COMPLETE Misfire Monitor Repair Verification Drive Cycle. RERUN Quick Test.

The CMP sensor is the Camshaft Position Sensor.

Posted on Nov 08, 2010

  • 2 more comments 
  • yadayada
    yadayada Nov 12, 2010

    Ok you have it under control, thanks for the rating anyway.

  • Tony Chavez Nov 12, 2010

    Not under control yet the check engine light is still on the cam shaft senor did not do the job---also is the car safe and OK to drive untill this is resolved.

    Advice on next steps.

  • yadayada
    yadayada Nov 12, 2010

    Hello and thanks for getting back to me, 1st off the car is 100% safe to drive. The next step is to have the dealer hook up what is called a "Flight Recorder", this will ID where the problem lies, the wiring or the PCM (Powertrain Control Module), you are over your head here, special dealer test equipment is required to find the cause of the Misfire monitor being disabled (code P1309)

  • yadayada
    yadayada Nov 25, 2010

    OK guess you know what to do here.


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Several possible causes there, check ans test...
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