P261B OBD II Trouble Code Coolant Pump B Control Circuit Range Performance

Symptoms of P261B OBD II Trouble Code

  • Malfunction Indicator Light On
  • Overheating
  • A/C system not functioning properly

Common Causes of P261B OBD II Trouble Code

  • Open in the circuit to the Coolant Pump - likely
  • Failed Coolant Pump ? inoperative (mechanically or electrically) - likely
  • Failed PCM - unlikely

Severity of P261B OBD II Trouble Code

Severity is usually severe due to its impact on the cooling system. Because this can be either an electrical or mechanical failure, the PCM cannot fully compensate for it. Partial compensation usually means that the cooling fans operate all the time (100 % duty cycle).