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Chevy expert, ASE Certified Technician
Category: Chevy
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Experience:  30 yrs experience ase cetified tech shop owner
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keep receiving malfunction code p0016 can not find any reference on it

Resolved Question:

hello keep receiving malfunction code P0016 can not find any reference on it. CAN YOU HELP
Submitted: 6 years ago.
Category: Chevy
Expert:  Chevy expert replied 6 years ago.

Welcome to just I'm here to help you and your 100% satisfaction is my goal.

This can be caused by a number of things including a faulty distributor a faulty crankshaft position sensor a loose reluctor wheel and sometimes clogged catalytic converters Remove the Crankshaft Position sensor and check the reluctor for being loose or cracked. Try shimming the Crankshaft Position Sensor per TSB #02-06-04-059. Test exhaust back pressure. It should be less than 1 PSI at 2000 RPM in park

Customer: replied 6 years ago.
HOW DO YOU CHECK THE BACK PRESSURE? I thought the crank sensor was factory set.
Expert:  Chevy expert replied 6 years ago.

Yes the sensor is set at the factory but because of the normal wear it can need reshimming,

if you remove the upstream oxygen sensors then you can use a gauge attached to the open port to read the presure

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