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Engine-Codes - Generic - B160F

B160F - Twilight/Ambient Light Sensor

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B160F Possible Causes

What does this mean?
  • Faulty Sun Sensor
  • Sun Sensor harness is open or shorted
  • Sun Sensor circuit poor electrical connection
  • Faulty Heating Ventilation and Air Conditioning (HVAC) A/C Heater Module

How is the B160F code repair?

Start by checking 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.

Tech Notes

What does this mean?
B160F-11 TWILIGHT/AMBIENT LIGHT SENSOR INPUT CIRCUIT SHORT TO GROUND
B160F-12 TWILIGHT/AMBIENT LIGHT SENSOR CIRCUIT SHORT TO BATTERY
B160F-92 TWILIGHT/AMBIENT LIGHT SENSOR INPUT PERFORMANCE OR INCORRECT OPERATION

What is the cost to diagnose the B160F code

Labor: 1.0

The cost to diagnose the B160F code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms

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

B160F Meaning

The Heating Ventilation and Air Conditioning (HVAC) A/C Heater Module uses a variety of sensors to adjust HVAC operation to obtain optimal performance. These sensors are continuously monitored by the A/C Heater Module to assure that they are in range. If those sensors fall out of predetermined ranges a Diagnostic Trouble Code (DTC) will set. If the A/C Heater Module detects on the Auto Headlamps Signal circuit a voltage less than 0.25 volts for the period of two seconds or more. This DTC has a de-maturing time of 20 msec. If the DTCs status changes from active to stored, the DTC will stay in memory for 100 ignition cycles.

More Information

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Information for specific makes

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