Another new DTC today.... - Ford Powerstroke Diesel Forum
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post #1 of 10 Old 05-14-2011, 01:20 PM Thread Starter
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Another new DTC today....

Checked the codes using my Edge Insight and had a new code. P0340 some kind of cam position sensor. So what causes this and what does it mean. If this is a sign of a problem what is it and what is the fix.

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post #2 of 10 Old 05-14-2011, 04:00 PM
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I believe P0340 is strictly a circuit code for the camshaft position sensor. You are probably going to need a CMP but it would be wise to check the circuits also

-Matt

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post #3 of 10 Old 05-14-2011, 05:06 PM Thread Starter
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I guess I'll show my ignorance. What do you mean by check the circuits. What do I do to check them.

2005 F250 CCSB 4X4
PHP Atlas 40 FICM Tune
PHP ECM/TCM Rollback
Old ECM VXCF9N4
New VXCF4N3
Old TCM TQCI1NA
New TQCI0N3
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Delo ELC Coolant
Rotella T6 w/Rev-X
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2009 Rear Bumper
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post #4 of 10 Old 05-14-2011, 06:19 PM
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First, check the connector and see if it is oil soaked.

Mark
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post #5 of 10 Old 05-14-2011, 08:14 PM
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When my head gaskets got done the harness disintegrated in the tech's hands, check the harness before replacing the sensor.

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post #6 of 10 Old 05-14-2011, 08:18 PM
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What kind of crank time are you having? It can set that code for excessive cranking and not have a problem with the sensor.

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post #7 of 10 Old 05-14-2011, 08:36 PM
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The resistance spec is 800 to 1100 ohms, if you're checking with a DVOM. I would check across the two cavities of the PCM connector directly first. If this checks out good, you could voltage drop test the circuit by disconnecting the connector from the CMP sensor first, and plugging in a big light bulb (be careful not to damage the pins of the connector) and then connect a battery on the PCM connector for the CMP circuit. For what it's worth, this circuit CANNOT be repaired or overlaid because it is ground shielded, so if you find a problem with this circuit, be prepared to replace the entire engine harness itself. I've already replaced MANY, including one on an E-Series this last three days.

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post #8 of 10 Old 05-15-2011, 12:29 AM Thread Starter
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To answer the question about crank time I would say it's usually around three to four seconds. I'm gonna check the connection today if it will quit raining long enough.

2005 F250 CCSB 4X4
PHP Atlas 40 FICM Tune
PHP ECM/TCM Rollback
Old ECM VXCF9N4
New VXCF4N3
Old TCM TQCI1NA
New TQCI0N3
Zoodad Mod
Delo ELC Coolant
Rotella T6 w/Rev-X
Fumoto Valve F-111
2009 Rear Bumper
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post #9 of 10 Old 05-15-2011, 11:40 AM Thread Starter
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Been doing a little research and am a little confused about which cam sensor I need. I've seen people talking about a black sensor and a gray sensor. What is the difference and which one do I need.

2005 F250 CCSB 4X4
PHP Atlas 40 FICM Tune
PHP ECM/TCM Rollback
Old ECM VXCF9N4
New VXCF4N3
Old TCM TQCI1NA
New TQCI0N3
Zoodad Mod
Delo ELC Coolant
Rotella T6 w/Rev-X
Fumoto Valve F-111
2009 Rear Bumper
Newton Lifts 2.5" leveling kit


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post #10 of 10 Old 05-15-2011, 09:05 PM
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7.3L DIT originally had a black sensor, they were recalled and replaced with a gray sensor

you need one for a 6.0L

-Matt

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