B2959 - Panel/Defrost Door Close Circuit Short/Failure

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

B2959 Possible Causes

  • Faulty Panel/Defrost Door Actuator Motor
  • Panel/Defrost Door Actuator Motor harness is open or shorted
  • Panel/Defrost Door Actuator Motor circuit poor electrical connection
  • Faulty Electric Manual Temperature Control (EMTC) Module or Electronic Automatic Temperature Control (EATC) Module

How do I fix code B2959?

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 B2959 code

Labor: 1.0

The cost of diagnosing the B2959 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)

B2959 Description

Under normal operation, to rotate the mode door actuator clockwise, the Electric Manual Temperature Control (EMTC) module or Electronic Automatic Temperature Control (EATC) module supplies voltage to the Blend, Floor/Defrost and Panel mode door actuator motors through the door actuator feed B circuits, and supplies ground through the door actuator feed A circuits. To rotate the mode door actuator counterclockwise, the EMTC module or EATC module reverses the voltage and ground circuits.
The mode door actuator feedback resistors are supplied a ground from the EMTC module or EATC module by the mode door actuator return circuits and a 5-volt reference voltage on the mode door actuator reference circuits. The EMTC module or EATC module reads the voltage on the mode door actuator feedback circuits to determine the mode door actuator position by the position of the actuator feedback resistor wiper arm.
OBDII Code B2959 - Panel/Defrost Door Close Circuit Short/Failure - AutoCodes.com

More Information

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Information for specific makes

  • B2959 FORD Panel/Defrost Door Close Circuit Short/Failure
  • B2959 LINCOLN Panel/Defrost Door Close Circuit Short/Failure
  • B2959 MERCURY Panel/Defrost Door Close Circuit Short/Failure

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