06 p0340

moneyhun89 · Apr 4, 2014

Bought a 06 cobalt 2.2 with 113k on it from a friend. Car would start to run bad lack of power trans would wind out each gear and feel like taking off in 2nd gear or just had no power. It would come and go most of the time it would act up after driving around town. Ran the codes and had a miss fire code and a o2 code p0420. I was thinking cats or plugs but she said a tune up didnt fix it. I bought it checked plugs looked alright and are acdelco. took the coil apart looked ok. cleaned the throttle body and ran a can of seafoam though it. Had the guys at my work clean the car and the degressed the motor. Car ran better then ever and didnt act up for about a hour then same old problem but the only code now is p0340 cam sensor?

Any help?

YelloEye · Apr 4, 2014

Cam sensor hooked up?

moneyhun89 · Apr 6, 2014

YelloEye said:
Cam sensor hooked up?

From my understanding 06 2.2 does not have a cam sensor?

YelloEye · Apr 6, 2014

Good catch.

Copy the following text, paste it into notepad, save as "diag.html", open with a browser. That took entirely too long to edit down.

HTML:

<TABLE WIDTH="95%" BORDER=1>
<TR>
<TH ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Step</P>
</TH><TH ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Action</P>
</TH><TH ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Values</P>
</TH><TH ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Yes</P>
</TH><TH ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>No</P>
</TH></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1>S02"><P>2</P>
</TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1>
<OL><LI TYPE="1">Start the engine.</LI>
<LI TYPE="1"> Observe the CMP Active Counter with a scan tool.</LI>
</OL>
<P>Does the CMP Active Counter parameter increment and then reset to 0 continuously?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 3 </P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 4
 </P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>3</P></TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1>
<OL><LI TYPE="1">Observe the Freeze Frame/Failure Records for this DTC.</LI>
<LI TYPE="1">Turn OFF the ignition for 30 seconds.</LI>
<LI TYPE="1">Start the engine.</LI>
<LI TYPE="1">Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records.</LI>
</OL>
<P>Did the DTC fail this ignition?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 4
 </P>
</TD><TD VALIGN="bottom" ROWSPAN=1><P>Go to Diagnostic Aids</P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>4 </P></TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1><P>Observe the Misfire Current CYL # 1 and CYL # 4 counters with a scan 

tool.</P>
<P>Is CYL #1 and/or CYL #4 Misfire counters counting up?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P></TD>
<TD VALIGN="bottom" ROWSPAN=1><P>Go to DTC P0300</P></TD>
<TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 5</P></TD></TR>
<TR><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>5</P></TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1>
<OL><LI TYPE="1">Turn OFF the ignition.</LI>
<LI TYPE="1">Disconnect the ignition control module (ICM).</LI>
<LI TYPE="1">Jumper the ICM circuits except for the camshaft position signal circuit from the ICM to the ICM harness 

connector. Refer to Using Connector Test Adapters.</LI>
<LI TYPE="1">Measure the DC duty cycle on the camshaft position signal circuit of the ICM with a DMM. Refer to Circuit Testing.</LI>
<LI TYPE="1">Start the engine.</LI>
</OL>
<P>Is the Duty Cycle within the specified range?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>45-55%</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 6</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 10</P></TD></TR>
<TR><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>6 </P>
</TD><TD ROWSPAN=1>
<OL><LI TYPE="1">Turn OFF the ignition.</LI>
<LI TYPE="1">Remove the jumper wires from the ICM.</LI>
<LI TYPE="1">Leave the ICM disconnected.</LI>
<LI TYPE="1">Turn ON the ignition, with the engine OFF.</LI>
<LI TYPE="1">Measure the voltage on the camshaft position signal circuit at the ICM harness connector with a DMM connected to ground. Refer to Circuit Testing.</LI>
</OL>
<P>Is the voltage within the specified range?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>4-6 V</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 8</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 7</P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>7</P></TD><TD ROWSPAN=1><P>Is the voltage above the specified range?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>4-6 V</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 11 </P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 8</P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>8</P></TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1>
<OL><LI TYPE="1">Turn OFF the ignition.</LI>
<LI TYPE="1">Disconnect the engine control module (ECM).</LI>
<LI TYPE="1">Measure the resistance of the camshaft position signal circuit with a DMM. Refer to Circuit Testing.</LI>
</OL>
<P>Is the resistance within the specified range?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>0-5 ohms</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 9
 </P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 12 </P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>9</P></TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1>
<OL><LI TYPE="1">Leave the ECM and ICM disconnected.</LI>
<LI TYPE="1">Measure the resistance from the camshaft position signal circuit of the ICM harness connector to a good ground with a DMM. Refer to Circuit Testing.</LI>
</OL>
<P>Is the resistance at the specified value?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>OL</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 16
 </P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 13</P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>10</P>
</TD><TD ROWSPAN=1>
<OL><LI TYPE="1">Turn OFF the ignition.</LI>
<LI TYPE="1">Remove the ICM from the ignition coil housing. Refer to Ignition Control Module Replacement .</LI>
<LI TYPE="1">Remove the interconnect from between the ignition coil housing and the ICM.</LI>
<LI TYPE="1">Inspect the interconnect for a poor connection at the coil housing and at the ICM. Refer to Testing for Intermittent Conditions and Poor Connections.</LI>
</OL>
<P>Did you find and correct the condition?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 18</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to Step 14
 </P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>11</P>
</TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1><P>Test the camshaft position signal circuit for a short to voltage. 

Refer to 

<a href="cellHandler.do?cellId=62194&refDoc=1542027&from=dtclist">Circuit Testing
 and 

<a href="cellHandler.do?cellId=61965&refDoc=1542027&from=dtclist">Wiring Repairs
 .</P>
<P>Did you find and correct the condition?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S18">Step 18
 </P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S16">Step 16
 </P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1>S12"><P>12</P>
</TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1><P>Test the camshaft position signal circuit for an open or high 

resistance. Refer to 

<a href="cellHandler.do?cellId=62194&refDoc=1542027&from=dtclist">Circuit Testing
 and 

<a href="cellHandler.do?cellId=61965&refDoc=1542027&from=dtclist">Wiring Repairs
 .</P>
<P>Did you find and correct the condition?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S18">Step 18
 </P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S16">Step 16
 </P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1>S13"><P>13</P>
</TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1><P>Test the camshaft position signal circuit for a short to ground. Refer 

to 

<a href="cellHandler.do?cellId=62194&refDoc=1542027&from=dtclist">Circuit Testing
 and 

<a href="cellHandler.do?cellId=61965&refDoc=1542027&from=dtclist">Wiring Repairs
 .</P>
<P>Did you find and correct the condition?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S18">Step 18
 </P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S16">Step 16
 </P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1>S14"><P>14</P>
</TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1><P>Test for an intermittent and for a poor connection at the ICM. Refer 

to 

<a href="cellHandler.do?cellId=62112&refDoc=1542027&from=dtclist">Testing for Intermittent Conditions and Poor 

Connections
 and 

<a href="cellHandler.do?cellId=61973&refDoc=1542027&from=dtclist">Connector Repairs
 .</P>
<P>Did you find and correct the condition?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S18">Step 18
 </P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S15">Step 15
 </P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1>S15"><P>15</P>
</TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1><P>Replace the ICM. Refer to 

<a href="cellHandler.do?cellId=68099&refDoc=1542027&from=dtclist">Ignition Control Module Replacement
 .</P>
<P>Did you complete the replacement?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S18">Step 18
 </P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>--</P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1>S16"><P>16</P>
</TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1><P>Test for an intermittent and for a poor connection at the ECM. Refer 

to 

<a href="cellHandler.do?cellId=62112&refDoc=1542027&from=dtclist">Testing for Intermittent Conditions and Poor 

Connections
 and 

<a href="cellHandler.do?cellId=61973&refDoc=1542027&from=dtclist">Connector Repairs
 .</P>
<P>Did you find and correct the condition?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S18">Step 18
 </P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S17">Step 17
 </P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1>S17"><P>17</P>
</TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1><P>Replace the ECM. Refer to 

<a href="cellHandler.do?cellId=72864&refDoc=1542027&from=dtclist">Control Module References
 for replacement, setup, and programming.</P>
<P>Did you complete the replacement?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S18">Step 18
 </P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>--</P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1>S18"><P>18</P>
</TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1>
<OL><LI TYPE="1">Clear the DTCs with a scan tool.</LI>
<LI TYPE="1">Turn OFF the ignition for 30 seconds.</LI>
<LI TYPE="1">Start the engine.</LI>
<LI TYPE="1">Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the 

conditions that you observed from the Freeze Frame/Failure Records.</LI>
</OL>
<P>Did the DTC fail this ignition?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S02">Step 2
 </P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>Go to 

S19">Step 19
 </P>
</TD></TR>
<TR>
<TD ALIGN="center" VALIGN="middle" ROWSPAN=1>S19"><P>19</P>
</TD><TD ALIGN="left" VALIGN="top" ROWSPAN=1><P>Observe the Capture Info with a scan tool.</P>
<P>Are there any DTCs that have not been diagnosed?</P>
</TD><TD ALIGN="center" VALIGN="middle" ROWSPAN=1><P>--</P>
</TD><TD VALIGN="bottom" ROWSPAN=1><P>Go to 

<a href="cellHandler.do?cellId=72795&refDoc=1542027&from=dtclist">Diagnostic Trouble Code (DTC) List - Vehicle</P>
</TD><TD ALIGN="center" VALIGN="bottom" ROWSPAN=1><P>System OK</P>
</TD></TR>
</TABLE>

06 p0340

moneyhun89

Junior Member

YelloEye

Super Moderator

moneyhun89

Junior Member

YelloEye

Super Moderator

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