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P261D OBD2: Coolant Pump "B" Control Circuit High

P261D OBD2: Coolant Pump “B” Control Circuit High

What Does the P261D Code Mean?

The P261D code is an OBD-II trouble code that indicates a problem with the coolant pump “B” control circuit. This code is triggered when the Powertrain Control Module (PCM) detects that the coolant pump is not operating at the expected speed.

What Causes the P261D Code?

  • Powertrain Control Module (PCM) failure
  • Water pump relay failure
  • Wiring issues in the coolant pump circuit

What Are the Symptoms of the P261D Code?

  • Overheating engine
  • Warning lights on the dashboard
  • Reduced engine performance
  • Poor fuel efficiency

How Serious Is the P261D Code?

The P261D code is classified as urgent; immediate action is necessary. Ignoring this code can lead to severe engine damage or create a hazardous driving situation for you and your passengers.

How to Diagnose the P261D Code

To diagnose the P261D code, a mechanic will typically:

  • Use an OBD-II scanner to confirm the code
  • Inspect the wiring and connectors related to the coolant pump
  • Test the coolant pump and relay for functionality
  • Check the PCM for proper operation

Common Repairs for the P261D Code

  • Replacing the coolant pump
  • Replacing a faulty water pump relay
  • Repairing or replacing damaged wiring or connectors
  • Reprogramming or replacing the PCM if needed

How Much Does It Cost to Fix the P261D Code?

The cost to repair the P261D code can vary widely depending on the underlying issue. Generally, you can expect to pay:

  • Diagnostic fees: $100 – $150
  • Water pump replacement: $300 – $800
  • PCM replacement: $400 – $1,200

Can I Fix the P261D Code Myself?

While some individuals with mechanical skills may attempt to fix issues related to the P261D code, it is essential to understand that proper diagnosis is critical. Simply replacing parts without confirming the root cause may not resolve the issue. If you are unsure, it’s best to consult with a professional mechanic.

About JC Landry

JC is the Senior Editor at eManualOnline.com, GarageSpot.com, and Drive-My.com, as well as the Webmaster of TheMechanicDoctor.com, only to name a few. He's been a certified Master Mechanic for 15 years, working for various car dealers and specialized repair shops before turning towards blogging about cars and EVs in the hope of helping the next generation of automotive technicians. He also loves cats, Johnny Cash and Subarus.

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