AutoCodes - OBDII Code List - P0AAF CADILLAC

P0AAF CADILLAC - Hybrid/EV Battery Pack Air Temperature Sensor 1 Circuit High Voltage

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3    What is this?
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P0AAF CADILLAC Possible Causes

  • Faulty Hybrid/EV Battery Section 1 and Hybrid/EV Battery Section 2
  • Hybrid/EV Battery Section 1 and Hybrid/EV Battery Section 2 harness is open or shorted
  • Hybrid/EV Battery Section 1 and Hybrid/EV Battery Section 2 circuit poor electrical connection
  • Faulty Battery Energy Control Module

How do I fix code P0AAF CADILLAC

Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

Cost of diagnosing the P0AAF CADILLAC code

Labor: 1.0

The cost of diagnosing the P0AAF CADILLAC code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.

Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

P0aaf Cadillac Description

The Battery Energy Control Module monitors an inlet air temperature sensor that is located at the inlet of the Hybrid/EV Battery Pack. This temperature sensor is a variable resistor that measures the air temperature of the incoming air which is used to heat and cool the Hybrid/EV Battery Sections and the internal electronics of the Starter/Generator Control Module. The Battery Energy Control Module supplies 5 V to the signal circuit and a ground for the low reference circuit. The inlet air temperature sensor resistance changes with temperature of the incoming inlet air. As the temperature decreases, the sensor resistance increases. As the temperature increases, the sensor resistance decreases. The Starter/Generator Control Module will control the Hybrid/EV Battery Pack Cooling Fan based on the inlet air temperature and hybrid/EV battery temperature sensors.
The Starter/Generator Control Module performs a rationality diagnostic that compares the air Inlet temperature sensor output signal to the average battery temperature of the six battery cell temperature sensors. This diagnostic gets one chance to run during a drive cycle after a specific vehicle off time.
OBDII Code P0aaf Cadillac - Hybrid/EV Battery Pack Air Temperature Sensor 1 Circuit High Voltage - AutoCodes.com

P0AAF CADILLAC More Information

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