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P261A OBD2: Coolant Pump "B" Control Circuit/Open

P261A OBD2: Coolant Pump “B” Control Circuit/Open

The P261A OBD-II code indicates a problem with the coolant pump control circuit in your vehicle. This code is classified as urgent, suggesting that immediate action is necessary to avoid severe damage to the vehicle or potential harm to drivers and passengers.

What Does the P261A Code Mean?

This code specifically refers to the engine control module (PCM) failing to detect that the coolant pump is operating at the commanded speed. The coolant pump, which is electronically controlled, is vital for maintaining optimal engine temperature.

What Causes the P261A Code?

Several issues can trigger the P261A code:

  • Powertrain Control Module (PCM) failure
  • Water pump relay failure
  • Wiring issues

What Are the Symptoms of the P261A Code?

The symptoms associated with the P261A code may include:

  • Engine overheating
  • Unusual noises from the engine compartment
  • Warning lights on the dashboard

How Serious Is the P261A Code?

The P261A code is considered urgent. If not addressed promptly, it can lead to significant engine damage or overheating, which can compromise the safety of the vehicle.

How to Diagnose the P261A Code

Diagnosing the P261A code involves a systematic approach:

  1. Check for any additional trouble codes.
  2. Inspect the wiring and connectors related to the coolant pump and PCM.
  3. Test the coolant pump operation.
  4. Examine the water pump relay for proper function.

Common Repairs for the P261A Code

Repairing the P261A code may require:

  • Replacing a faulty PCM
  • Replacing the water pump relay
  • Repairing or replacing damaged wiring

How Much Does It Cost to Fix the P261A Code?

The cost of fixing the P261A code can vary significantly based on the underlying issue. On average, repairs may range from $100 to $1,000, depending on whether it involves simple wiring repairs or a complete PCM replacement.

Can I Fix the P261A Code Myself?

If you have experience with automotive repairs and diagnostics, you may be able to address the P261A code yourself. However, if you are unsure or lack the necessary tools, it’s advisable to seek professional help to ensure the problem is correctly diagnosed and repaired.

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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