My 2005 ion keeps going to reduced power mode p2138. Than I clear it its fine but keeps coming on at all different times unpredictable. Also has codes p2135- p2138 what could be the problem ?
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Asked by Mainprizer Jan 24, 2015 at 05:25 PM about the 2005 Saturn ION

Question type: Maintenance & Repair

3 Answers
270

HowardBerguer answered 9 years ago

Replace the A/C Refrigerant Pressure Sensor or the Fuel Tank Pressure (FTP) Sensor.

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Mainprizer answered 9 years ago

How would the ac pressure sensor help my throttle position pedal sensor code readingp2135??

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Red_Coupe answered 8 years ago

my 06 ion coupe was throwing P0120, P0123 and P2135 when it rained/snowed. The ECM has 2 large connectors on it. When facing the car the connector on the left had 3 chafed wires right where the wires meet the connector. You will need to remove the connector to see them. I used vulcanizing rubber tape to re- seal and pad them against the connector.

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