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Old 20 Apr 2013, 02:08 pm
fy9-03pt's Avatar
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Default engine light

on the way to Florida car ran like it was missing .When I got here the CEL came on then went out. I checked for codes and it gave me a P0068 what do i need to do or replace ?

Also my oil light came on ,I checked the oil was almost 1 quart low added oil and light went out . Later I went to store the light came back on. pulled over chked oil still full ,turned engine on and light went out now its a wait and see if it comes on again.
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Old 20 Apr 2013, 03:21 pm
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Default Re: engine light

From PT Do-It-Yourself.net:

P0068 - Manifold Pressure/Throttle Position. Correlation MAP sensor signal does not correlate to throttle position sensor signal.

Possible causes for this DTC include:

High Resistance in MAP 5 Volt Supply Circuit
Resistance to Ground in MAP 5 Volt Supply Circuit
MAP Sensor
High Resistance in MAP Signal Circuit
Resistance to Ground in MAP Signal Circuit
High Resistance in MAP Ground Circuit
TP Sensor Operation
High Resistance in TP Sensor 5 Volt Supply Circuit
Resistance to Ground in TP Sensor 5 Volt Supply Circuit
TP Sensor
High Resistance in TP Signal Circuit
Resistance to Ground In TP Sensor Signal Circuit
High Resistance in TP Sensor Ground Circuit
PCM

If you replaced the MAP and TPS and still have an engine light (MIL), they didn't resolve the problem.

This fault can also be caused by a vacuum leak, which could help explain the rough idle and surging. Check for vacuum leaks first. If vacuum is ok your dealer will have to run a diagnostic to rule out the remaining potential causes in the list.

---------------------------

Map sensor...



Throttle Position Sensor (TPS)



First things first: Take off the negative battery cable for 5 minutes. Clear the code and see if it comes back later. Also, check the wire harness and connections to the TPS and the MAP sensor to make sure all wires are connected.
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Last edited by CREWZIN; 20 Apr 2013 at 03:25 pm.
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Old 20 Apr 2013, 03:26 pm
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Default Re: engine light

You were to fast for me CREWZIN.
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Old 20 Apr 2013, 03:34 pm
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Default Re: engine light

Quote:
Originally Posted by Busted_PT View Post
You were to fast for me CREWZIN.
That's OK, You beat me to the punch while I was typing on this one...

Plugs, Wires?

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Old 23 Apr 2013, 10:05 pm
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Default Re: engine light

I took the MAP off and shot some electronics cleaner in it let it set for awhile and repeated that again & got some soot type stuff out. left it sit and in afternoon put it back together . Went for a test drive no miss or popping at 65 mph I hit it up to 75 So far so good. I bought one to keep now as a spare.I will order a TPS when I get home next week . checked with dealer in Naples but it is a special order item .Not in stock.
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