PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

p0068 dtc

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Old Jan 9, 2012 | 06:48 PM
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caddy03pimpin's Avatar
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From: socal
Default p0068 dtc

understand its a MAP/throttle body correlation problem... Yes it has a new 2 bar MAP sensor, but I can assure you it is not vacuum leak, and the MAP sensor is reading properly...

I too am leaning to a faulty TPS as the truck is very jerky at light throttle, the throttle body is a new nw 102 dbw any insight will help thanks.
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Old Jan 9, 2012 | 06:51 PM
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From: on the dyno tuning in MD
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You will need to get a log on it and find out what it is doing when the fault comes in to be sure...
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Old Jan 10, 2012 | 08:03 AM
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You are obviously supercharged, so you will need to modify the airflow values and make them larger on the safety stuff so the computer knows it is ok for the extra airflow.

Some people just delete the code, some people fine tune in all the tables and call it a day...
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Old Jan 10, 2012 | 08:04 AM
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Throttle being "Jerky" could mean alot of things.

Try removing some timing in the problem areas to mellow it out, That or try to change your shiftpoints to get around that problem area.

Another thing to try is lowering the throttle progression tables a TINY bit.
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