OBD Guide

P261B

Coolant Pump B Control Circuit Performance/Stuck Off

P261B is an OBD-II diagnostic trouble code meaning: Coolant Pump B Control Circuit Performance/Stuck Off. Common causes: coolant pump b fault, open or short circuit in control circuit. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Engine overheating
  • Unstable operation of the cooling system
  • Check Engine light comes on
  • Reduced interior heating efficiency

Causes

  • Coolant pump B fault
  • Open or short circuit in control circuit
  • Poor contact in pump connectors
  • Faulty relay or fuse
  • Problems with the engine control unit

How to Fix

  1. Check fuses and pump relays
  2. Diagnose the control circuit for opens and shorts
  3. Check the connectors and contacts of the pump
  4. Test operation of coolant pump B
  5. If necessary, replace the pump or repair the chain

Related codes

Error P261B by Vehicle Brand

FAQ

What does the P261B code mean?

P261B is an OBD-II diagnostic trouble code that indicates: Coolant Pump B Control Circuit Performance/Stuck Off

What causes a P261B error code?

The most common causes of P261B include: Coolant pump B fault; Open or short circuit in control circuit; Poor contact in pump connectors; Faulty relay or fuse.

How do I fix a P261B diagnostic trouble code?

To fix P261B: Check fuses and pump relays. Diagnose the control circuit for opens and shorts. Check the connectors and contacts of the pump. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P261B?

Limited driving only, diagnose soon

How much does it cost to fix P261B?

The estimated repair cost for P261B is $33–167. Actual cost depends on your vehicle, location, and labor rates.

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