Oxygen sensor location on a 2003 Saturn Ion-1

code p0132 refers to heated oxygen sensor (HO2S) 1 bank 1--high voltage==causes --wiring short to positive--HO2S ECM or it also refers to oxygen sensor 1bank 1high voltage==causes --wiring short to positive O2S--ECM I would be replacing both the oxygen sensors

follow the exhaust its the 1st 1

Probably the heater element in the Oxygen sensor has failed.

There is two oxygen sensors on a Saturn Ion. One on the exhaust before the convertor and one after the convertor.

P0130 Oxygen Sensor Circuit Malfunction - Bank 1 Sensor 1.
P0131 Oxygen Sensor Circuit Low Voltage - Bank 1 Sensor 1.
P0132 Oxygen Sensor Circuit High Voltage - Bank 1 Sensor 1.
P0133 Oxygen Sensor Circuit Slow Response - Bank 1 Sensor 1.
P0134 Oxygen Sensor Circuit No Activity detected - Bank 1 Sensor 1.
P0135 Oxygen Sensor Heater Circuit Malfunction - Bank 1 Sensor 1

Downstream O2 sensor is the O2 sensor after the Catalytic converter. Jack the car off the ground so you can get under it, disconnect the wire leads and with a close end wrench. Snake the wire leads through and wrench and place the wrench one the O2 sensor and with a hammer, tap the wrench to break lose the O2 sensor from the exhaust pipe. Once the O2 sensor has loosen up, just remove and install the new O2 sensor. Reconnect the wire leads, start the car and listen for any exhaust leaks. Once no leak has been determined, Place car back on the ground and go for test drive. Check engine light should go off after three start up and car has reached it's operating temperature and DTC codes will be erased after 100start cycle. Good luck and be safe.

Oxygen Sensor Connector locations

1. Disconnect the oxygen sensor connector.
2. Using an ohmmeter, measure the resistance between the terminals +B and HT. Resistance specification: 11 - 16 ohms at 20°C (68°F).
3. If the resistance is not as specified, replace the sensor.
4. Reconnect the oxygen sensor connector.

Oxygen Sensor testing




I really hope helped with this. Remember rated this help, good luck.

Installation Removal & Installation

1. Remove the heat shield.
   
2. Note the routing of the Heated Oxygen Sensor (HO2S) electrical harness.
   
3. Disconnect the HO2S electrical connector.
   
4. Using a suitable Oxygen sensor socket remove the sensor.
   

To install:

NOTE A special anti-seize compound is used on the HO2S threads. The compound consists of a liquid graphite and glass beads. The graphite will burn away but the glass beads will remain, making the sensor easier to remove. New or service sensors already have the compound applied to the threads. If the sensor is removed and is to be reinstalled, the threads must be coated with an anti-seize compound before reinstallation.

1. If reinstalling the old HO2S, coat the threads with anti-seize compound.
   
2. Carefully install the HO2S to the pipe. Tighten the sensor to 22 ft. lbs. (30 Nm) on the sensor located at exhaust manifold, or 30 ft. lbs. (41 Nm) for the rear oxygen sensor.
   
3. Attach the sensor electrical connections.
   

Fig. Heated Oxygen (HO2S) location (sensor 1)-2.4L engine



Fig. Heated Oxygen (HO2S) location (sensor 2)-2.4L engine



Fig. Heated Oxygen (HO2S) location (bank 1, sensor 2) (bank 2, sensor 2)-2.7L engine



Fig. Heated Oxygen (HO2S) location (bank 2, sensor 1)-2.7L engine

I hope help you with this (rated this help). Good luck.

Up stream O2 sensors are always before the convertor. Check the exhaust manifold, if you have a V6 you may have two, make sure you know which one is bad.