Question about 2003 Chevrolet Suburban 2500
This is throwing codes PO336, P0342, P0343 and P0650
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Posted on Jan 02, 2017
SOURCE: 2004 Chevy Silverado HD 2500
On many engines with distributor less ignition systems and sequential fuel injection, a camshaft position sensor is used to keep the engine's control module informed about the relative position of the crankshaft. By monitoring cam position (which allows the control module to determine when the intake and exhaust valves are opening and closing), the control module can use the cam position sensor's input along with that from the crankshaft position sensor to determine which cylinder in the engine's firing sequence is approaching top dead center. This information is then used by the engine control module to synchronize the pulsing of sequential fuel injectors so they match the firing order of the engine. On some applications, input from the camshaft position sensor is also required for ignition timing.
The camshaft position sensor may be magnetic or Hall effect, and mounted on the timing cover over the camshaft gear, on the end of the cylinder head in an overhead cam application, or in a special housing that replaces the distributor (in the case of some of the GM applications). Operation and diagnosis is essentially the same as that for a crankshaft position sensor.
Re check the wire harness and the sensor installation to the camshaft sensor in Bank #1 which is where the #1 cylinder is. Good luck and hope this adds some light to you question, keep me posted and be glad to help.
Posted on Jun 02, 2009
SOURCE: What are code p0342 and p0431
342 is camshaft position sensor and 431 is your catalytic converter may be getting weak. If this was my car I would do the 342 code and see if the other code for the cat comes back. Tell the shop fix the camshaft sensor. If the sensor is bad your car can still run but its possible you could set a cat code because
of it but on the other hand you cannot set a camshaft code because of a bad cat.
I am a smog tech in California
Posted on Aug 10, 2009
SOURCE: engine codes P0650 and P0700
po650 malfuction idicator light control curcuit
po700 transmission control system (mil request)
malfuction indicator light is the check engine light
mil request is the same thing
hope this is helpful
Posted on Aug 14, 2009
If these conform to the generic codes:
P0342 - Camshaft Position Sensor A - Bank 1 Circuit Low Input
P0460 - Fuel Level Sensor A Circuit Malfunction
If you wish to make this a DIY repair (shouldn't be too difficult) I recommend you locate a service manual to guide you but neither Haynes nor Chilton offer them. Check your local library since they occasionally have them available.
Posted on Nov 05, 2009
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