Engine-CodesGeneric – P261D

P261D Code - Coolant Pump 'B' Control Circuit High

Quick Answer

The P261D diagnostic trouble code (DTC) refers to a Coolant Pump 'B' Control Circuit High. Common causes include Faulty coolant pump, Malfunctioning coolant pump relay, Damaged wiring or connectors in the control circuit. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P261D indicates Coolant Pump 'B' Control Circuit High.
Common causes
Common causes include Faulty coolant pump, Malfunctioning coolant pump relay, Damaged wiring or connectors in the control circuit.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Table of contents Created and updated by William Orellana on Sep 30, 2024
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Code P261D Description

The P261D diagnostic trouble code (DTC) refers to a Coolant Pump 'B' Control Circuit High. This code indicates that there is a high voltage condition detected in the control circuit of the coolant pump 'B'. The coolant pump is responsible for circulating coolant through the engine to maintain optimal operating temperature. When the control circuit is reporting a high voltage, it means that the pump is not functioning properly, which can lead to overheating and potential engine damage.

OBDII Code P261D - Coolant Pump 'B' Control Circuit High
P261D Code - Coolant Pump 'B' Control Circuit High

Common Causes of P261D

  1. Faulty coolant pump
  2. Malfunctioning coolant pump relay
  3. Damaged wiring or connectors in the control circuit
  4. Issues with the engine control module (ECM)
  5. Low coolant levels

Symptoms of P261D

  1. Engine overheating
  2. Coolant leaks
  3. Illuminated check engine light
  4. Reduced engine performance
  5. Increased fuel consumption

How to Fix P261D

  1. Begin by conducting a visual inspection of the coolant pump, relay, wiring, and connectors to check for any visible damage or signs of wear.
  2. Use a multimeter to test the voltage in the coolant pump 'B' control circuit to determine if it is reading higher than normal.
  3. If the voltage is high, replace the coolant pump and/or coolant pump relay as needed.
  4. Repair any damaged wiring or connectors in the control circuit.
  5. Clear the DTC with a scan tool and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P261D

The typical repair costs for addressing a Coolant Pump 'B' Control Circuit High issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, replacing a faulty coolant pump or relay can cost anywhere from $200 to $500, including parts and labor. Additional costs may apply if there are wiring or ECM issues that need to be addressed. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate based on your vehicle make and model.

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Code P261D Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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