Question about 2000 Pontiac Grand Prix

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Code p1635 chevy 96 berretta code p1635

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  • foxypumpkin6 Jun 17, 2010

    have a pontiacgr prix 2002 codes p1635, p0446, p01441. no fuses r blown, it gives itself gas i have to ride the brakes, revs high, idles high, doesnt shift right, service engine light is on, low gas light even though half tank or better, also has hadsecurity issues lately with the key . and now i cant get the car to evn start

    please email any suggestions to



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The P01535 refers to the 5 volt reference circuit generated by the PCM. The reference voltage is being pulled low for some reason.
If there are no other codes present, the code is indicating the PCM 5 volt output is too low caused by an internal PCM failure.
If you have a volt meter, check the voltage at the TPS ( gray wire and key in run position ) and see what the actual voltage is.
Let me know and we can go from there.

Posted on Apr 23, 2009


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03 chevy impala how to fix pocode 1635 is this the computer are what is it

DTC P1635
The powertrain control module (PCM) provides 5 volts to the following sensors:
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The exhaust gas recirculation (EGR) valve

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These 5-volt reference circuits are independent of each other outside the PCM, but are bussed together inside the PCM. Therefore a circuit condition on one sensor 5-volt reference circuit may affect the other sensor 5-volt reference circuits. The PCM monitors the voltage on the 5-volt reference circuit. If the PCM detects that the voltage is out of tolerance, DTC P1635 sets.
Diagnostic Aids
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For an intermittent condition, refer to Intermittent Conditions .

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