Question about 2002 Chevrolet Monte Carlo
Diagnostic Test Code (DTC) P1189
Description: "Oil Pressure Switch Signal Voltage Is High"
The engine oil pressure switch closes when there is low oil pressure, making the sensor signal voltage low. The switch opens when the oil pressure is above 4.5 Psi, making the sensor circuit voltage high. The Powertrain Control Module (PCM) monitors the oil pressure switch and sends a class 2 message to the Instrument Panel Cluster (IPC) to tell it if the switch is open or closed. DTC1189 is set when the PCM determines that the sensor signal circuit is high with the ignition switch in the RUN position for more than 10 seconds.
Both the PCM and IPC must be scanned and the data must be checked and verified before the actual cause of this code can be accurately determined. This can be caused by a number of different things including: low engine oil pressure, a malfunctioning oil pressure switch, broken wires or bad connectors, or a defective IPC or ECM.
Posted on May 24, 2011
If you take this car to advance auto parts they should have a OBD II system tester that will tell them what the code on there computer system. The code and what it represents after it should show up so go take your car to this place and ask them to test your OBD II You can call autozone or advance auto parts to ask them this code from your area.
Posted on May 24, 2011
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Posted on Jan 02, 2017
SOURCE: 02 monte carlo- EVAP code.
hi there, you see todays cars are so emmision friendly that not even the vapors from your tank can be released into the atmosphere so what they have done is all your vapors are put into a charcoal canister to absorb the vapors and the next time you start the car it has a purge solenoid open and burn the vapors off. if you look around the intake youll see a hose with a green cap follow it back to the charcoal canister and while your doing that just check the hoses and the hoses around the canister to make sure there is no holes or cracks in them and then follow the hose from the canister to the gas tank. if every thing looks good then i would replace the purge solenoid.
Posted on Aug 28, 2008
THESE ARE FROM THE GM CODE DIFINITION MANUAL, U NEED TO TAKE THIS TO THE DELAER, U HAVE SOME SERIOUS PROBLEMS TO GIVE THIS MANY CODES.
P0300 - Engine Random Misfire Detected
P0441 - Evaporative Emission Control System Incorrect Purge Flow
P0705 - Trans Range Switch Circuit
P1106 - Manifold Absolute Pressure (MAP) Sensor Circuit Intermittent High Voltage
P1133 - Heated Oxygen Sensor (HO2S) Insufficient Switching Bank 1 Sensor 1
P1441 - Evaporative Emission (EVAP) System Flow During Non-Purge
P1662 - Cruise Lamp Control Circuit
P1672 - Low Engine Oil Level Lamp Control Circuit
P1870 - Transmission Component Slipping
Posted on Mar 24, 2009
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I'd suspect a sticking injector--car should have set the check engine light. Read the code(s) to progress further. If the coil pack were a problem, it would not be likely to fix itself. If the codes indicate an injector problem, try an injector cleaner in the fuel--worst case, replace the bad injector. The codes should indicate which cylinder to change the injector.
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