My 2007 Saturn Ion2 (2.2 Ltr) shows a P2127 code: Acceleration (APP) Sensor 2 circuit low voltage. How do I locate and fix this?
SOURCE: Cam Shaft Position Sensor 1998 Saturn SL
Have a look at this link, scroll to your engine & click on picture to expand for better view.
http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528017e904
SOURCE: 1999 Saturn SL1
Your "transmission high input sensor" is also known as a "neutral safety switch". It depends on you trans (auto, or standard) as to the location. Either way, it's a simple and inexpensive repair.
SOURCE: Code: P0133 - O2 Sensor Circuit Slow Response Bank 1 Sensor 1
is this a 4 or 6 cylinder?
if a 4 cylinder it will only have 2 o2 sensors
V6 will have 4 o2 senors which the sensor will be the right side of the engine first sensor.
1st sensor on exhaust, I recommend if you change one change all, as this will make the computer when it rechecks the system you have all clean/fast responding sensors.
if you have a slow response it means the sensor is dirty and not reading well, which is usually caused by minor misfires that the engine computer dismisses, so a tune up would be recommended too.
SOURCE: coolant sensor on a saturn, can you show location?
well there are 2 coolant sensors,,,one is the coolant level sensor which is internal to the coolant resivor,,but i think you are talking about the infamous engine coolant temp sensor,,,,ok pop your hood you will see the cam cover that says saturn on it,,,,thats the top of the engine,,,ok,,,then on the lower right side of that you will see the upper radiator hose,,,and the EGR valve,,,,now inbetween the egr valve and upper rad hose is where the coolant temp sensor is,, its just below them,,there is a little wiring harness with a yellow and a black wire going to it,,,,it actually screws into the lower side of the cylinder head,,,,just squeze the wiring connector at the 2 thicker spots and pull it straight off then take the coolant cap off the resivor,,to relases pressure and put it back on,providing the car is not hot,,,,the sensor is actually a 13mm or 14mm socket that removes the sensor,,,,,they usually crack and leak into the harness so check the harness for corrosion,,,,be like green/blue on terminals,,if so youre gonna have to wire in a new connector,,,,no big deal ,, normal s-series issue,,,do not use aftermarket junk like autozone as these do not read correctly from the start youre gonna have to shell out the money at the saturn dealer for the good stuff ,,like $18 for the sensoe and $37 for the connector but it comes with the 2 **** connectors you need to wire it in,,,so if you remove the sensor just put the new one in snug but dont break it off,,,,top off coolant,,,,cut the 2 wires off the old connector as close to the end as possilbe. so you retain as much wire as you can,,,,,it doesnt matter which wire goes on what side but i lke to keep it the way it was the black wire on the right and the yellow on the left,,use the **** connectors,then heat shrink them and wrap them with electrical tape and youre done
SOURCE: 2007 saturn ION2 Has engine fault code P0496
P0496 - Evaporative Emission (EVAP) System Flow During Non-Purge most likely the canister vent valve or purge solenoid is stuck open.
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Limited throttle mode--The ECM will continue to use the accelerator pedal for throttle control, however, the maximum throttle opening is limited.
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Throttle default mode--The ECM will turn OFF the throttle actuator motor and the throttle will return to the spring loaded default position.
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Forced idle mode--The ECM will perform the following actions:
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Limit engine speed to idle by positioning the throttle position, or by controlling the fuel and spark if the throttle is turned OFF
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Ignore the accelerator pedal input
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Engine shutdown mode--The ECM will disable fuel and de-energize the throttle actuator.
Did you have it checked for DTC's - diagnostic trouble code's related to the reduced engine power ?
All so has APP sensor gas pedal !
Accelerator Pedal Position (APP) Sensor
The accelerator pedal contains 2 individual accelerator pedal position (APP) sensors within the assembly. The APP sensors 1 and 2 are potentiometer type sensors each with 3 circuits:
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A 5-volt reference circuit
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A low reference circuit
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A signal circuit
The APP sensors are used to determine the pedal angle. The engine control module (ECM) provides each APP sensor a 5-volt reference circuit and a low reference circuit. The APP sensors provide the ECM with signal voltage proportional to the pedal movement. The APP sensor 1 signal voltage at rest position is less than 1 volt and increases to more than 4 volts as the pedal is actuated. The APP sensor 2 signal voltage at rest position is less than 0.6 volt and increases to more than 2 volts as the pedal is actuated.
Your best bet is take your vehicle to the dealer !
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