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AutoCodes - Generic - B2959

B2959 Code - Panel/Defrost Door Close Circuit Short/Failure

- Code Popularity: 413 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B2959?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other 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
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How to Fix the DTC B2959?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2959 code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

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

Code 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
B2959 Code - Panel/Defrost Door Close Circuit Short/Failure

Need More Information on the Code?

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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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Code B2959 comments

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