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-   -   Check Engine light came on (https://camaroforums.com/forum/93-02-general-41/check-engine-light-came-87201/)

99RedRocket 09-04-2023 09:38 AM

Check Engine light came on
 
I hooked up a scanner and these are the codes;
P0113 -air intake temperature sensor circuit high input
P0704 - clutch switch input circuit
P1111 - intake air temperature circuit intermittent high voltage
P1153 Heater oxygen sensor circuit insufficient activity Bank 2 Sensor 1

Is anyone familiar with the above? I can take it in to my shop but If I can correct the above and have the check light turned off, without spending needless money - that would be great. Thanks in advance.
Johnny

craby 09-06-2023 02:27 PM

check wiring harness for the sensors for any damage. sounds like a sort. if I remember right intake air temp sensor is 5/low volt so if its shorting to 12 volt it would cause a couple of these.

99RedRocket 09-06-2023 04:19 PM


Originally Posted by craby (Post 746672)
check wiring harness for the sensors for any damage. sounds like a sort. if I remember right intake air temp sensor is 5/low volt so if its shorting to 12 volt it would cause a couple of these.

Well the dash instruments have been sweeping upon starting in cold weather the last year but in the last four months, they swipe every time the car is started. All gauges perform a sweep except for the oil gauge so I assume the instrument computer is kaput. Iam the original owner.

Gorn 09-07-2023 05:35 AM


Originally Posted by craby (Post 746672)
check wiring harness for the sensors for any damage. sounds like a sort. if I remember right intake air temp sensor is 5/low volt so if its shorting to 12 volt it would cause a couple of these.

Nice call, I would also check PCM grounds. Sometimes a bad ground will increase voltage. A bad sensor can do the same thing as a bad ground to the 5 volt reference.

You really want to sort this out even if you have to take it to a tech. If the system is seeing high voltage this could be causing a high draw of power and that can fry the quad drivers in the PCM. Meaning new PCM time. As long as you do not get no voltage error your PCM is probably working.





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