What is code P261B?
OBD-II Code Powertrain Control Module (PCM) failure is defined as a Coolant Pump “B” Control Circuit Range/Performance. The water pump on some vehicles is electronically control by the engine control module (PCM). If the PCM does not detect the water pump is spinning at the speed commanded, code P261B will be set.
What is coolant pump B?
Coolant pump B is an electric pump for the EGR cooler which is why the light has come on, the EGR cooler could get too hot which increases emissions at the very least.
Does a Prius have a thermostat?
Toyota Prius Thermostat Replacement Cost Estimate. The average cost for a Toyota Prius thermostat replacement is between $189 and $226. Labor costs are estimated between $140 and $176 while parts are priced at $50. This range is based on the number and age of Toyota Prius’s on the road.
What is the function of coolant pump?
A coolant pump is a type of pump used to recirculate a coolant, generally a liquid, that is used to transfer heat away from an engine or other device that generates heat as a byproduct of producing energy.
What is heater support pump?
After some head scratching he said that the “support heater pump” is an auxiliary pump used in some situations when the engine is stopped to keep the heating/cooling working (in the same way that the radiator fans sometimes keep spinning for a while).
When should I replace my Prius thermostat?
When to consider replacing the engine cooling system thermostat:
- Engine overheats. A thermostat with the valve stuck closed is a common cause of engine overheating.
- Temperature gauge reads too low or too high.
- Cooling system repairs.
What causes a p261b code on a coolant pump?
Symptoms of a P261B code may include: Potential causes for this code to set are: Open in the circuit to the Coolant Pump – likely Failed Coolant Pump – inoperative (mechanically or electrically) – likely A good starting point is always to check for technical service bulletins (TSB) for your particular vehicle.
What does check hybrid system with code p261b mean?
The “check hybrid system” warning would typically bring on limp mode but the OP only reports the engine related code. Assuming ScanGauge is hybrid code aware, I’d expect to see a hybrid code thrown, but who knows what P261b protocol may be in protecting the car.
What does p261b stand for in Mendel Leisk?
To clarify, P261b is an engine water pump code, not inverter. Mendel Leisk and bisco like this. is there no overheating temp dummy light on the dash? There is, but knowing what we know, I’d never want to see it. It’s hard to think these heads have integrity enough to tolerate an actual overheat.