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On my 2013 2.0 the ETC light decided to pop on, car went in to limp mode and now the battery is dying. Definitely not the app sensor as that was replaced. Any ideas?
 

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You likely have other codes that your scanner is not reading. The ETC relies on the ABS sensors. Could be a wiring problem but get it scanned with a scanner that can read all the electronic modules.

28 - DTC-Based Diagnostics / MODULE, Powertrain Control (PCM), 2.0L / Diagnosis and Testing

P2127-ACCELERATOR PEDAL POSITION SENSOR 2 CIRCUIT LOW
Rectangle Schematic Parallel Font Slope

When Monitored and Set Conditions

When Monitored: This diagnostic runs continuously when the following conditions are met:

•With the ignition on.
•Battery voltage greater than 10.4 volts.

Set Conditions:

•The Powertrain Control Module (PCM) detects that the APP Sensor 2 input voltage is below the minimum acceptable value.

Default Actions:

•The MIL light will illuminate.
•The ETC light will flash.

Possible Causes

5-VOLT SUPPLY CIRCUIT OPEN OR SHORTED TO GROUND
APP SENSOR 2 SIGNAL CIRCUIT SHORTED TO GROUND
APP SENSOR 2 SIGNAL CIRCUIT SHORTED TO THE APP SENSOR 1 RETURN CIRCUIT
APP SENSOR 2 SIGNAL CIRCUIT SHORTED TO THE APP SENSOR 2 RETURN CIRCUIT
APP SENSOR 2 SIGNAL CIRCUIT OPEN/HIGH RESISTANCE
APP SENSOR 2 GROUND CIRCUIT OPEN/HIGH RESISTANCE
APP SENSOR
POWERTRAIN CONTROL MODULE (PCM)
 
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