Q: Problems with heating with check engine light on

asked by on May 23, 2016

My car has gone around 130,000 miles and started having problems with the heating. Lately, soon after I start the car, the temperature gauges go to hot. But, there is actually no heat in the vehicle. When I put it to 100, it is probably only about 60. Sometimes it works correctly or idles a bit while hot air starts blowing.There were no check engine light or overheating warning showing until recently. The last time I turned the car on, the temperature gauge went to hot. At the same time, the check engine light came on. Is the thermostat the problem or something else? I appreciate your help.

Heater Control Valve Replacement $147.06 - $957.12 Get a Quote
Cooling System Flush $178.82 - $224.54 Get a Quote

On the 528’s, there is an electronically controlled heater valve that can stick closed, blocking heated coolant from entering the heater core. Replacing this component will mean the coolant system would need to drained, filled, and bled.

You may want to enlist the help of a mechanic, such as one from YourMechanic, who will have training and equipment to not only replace the valve but to properly fill and bleed the cooling system.

Please note: never attempt to service the engine cooling system while the engine is hot or the system is pressurized, as doing so could result in serious injury.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

What others are asking

Possible to drive without front differential?

If the vehicle has manually selectable 4WD, then you can get away with this, but it's obviously not ideal. If the vehicle is not selectable and is instead a full time AWD, then you cannot do this, as the car...

Check Engine Light on, catalytic converter and O2 sensors need changing - $3000

Hi there: If you're Check Engine Light is coming on and somebody diagnosed this as a problem with your O2 sensors or the catalytic converter emissions system, it's highly possible that the trouble part are the front or back bank...

My BMW 320i has smoke coming from the left side of the engine

You could have a small oil leak or even a coolant leak. When the fluid drops on a hot surface, it burns or boils. Coolant and oil leaks are easy to distinguish if you can get where you can smell...

2013 BMW 528i Maintenance Costs

This is a great car that performs well and runs very efficiently. As to the average annual maintenance costs per year, this may be tough to say as everyone's driving habits are different which require different maintenance intervals. As for...

2006 Ridgeline RTL engine light stays on. Vehicle runs great and has new catalytic converter. Did reset but light came back on. Best guess please.

Hello, thank you for writing in. The checking engine light that you are receiving can stand for a large number of issues with the vehicle, and knowing what codes have been triggered are the only way to resolve the issue....

Sunroof stuck open.

You may have a bad relay or faulty switch for the sunroof. If the sunroof doesn't move at all I would have a technician come out and test voltages from the switch and relay and to diagnose the problem.

Stiff power steering after being hit in the front tire.

Hello there, many faults will cause the power steering on your 1999 BMW 323i to become stiff after getting hit on the front tire. The most likely would be damage to the power steering rack from the impact to the...

Engine takes too long to warm up runs poor until it warms up.

There is only two possible causes of an engine running colder than it is supposed to. The fan clutch may be locked up and would cause a load on the engine and excessive airflow across the radiator not allowing the...

Check engine light is on. I took it to AutoZone and told me it is the code P0401. Is it safe to drive until next week?

Hi There, Code P0401 relates to the EGR valve flow. When this code is triggered, the computer has detected that the flow is insufficient. Driving the car until next week will not cause any harm, although the vehicle may not...

Related articles

P0007 OBD-II Trouble Code: Fuel Shutoff Valve "A" Control Circuit High
P0007 P0007 code definition The P0007 code is associated with an electrical circuit which connects from your engine computer to your fuel system and is most commonly found on diesel engines. It also may be related to other codes, such...
P2563 OBD-II Trouble Code: Turbocharger Boost Control Position Sensor Circuit Range/Performance
P2563 code definition Turbocharger Boost Control Position Sensor Circuit Range/Performance What the P2563 code means P2563 is an OBD-II generic code. The...
P3492 OBD-II Trouble Code: Cylinder 12 Deactivation/Intake Valve Malfunction
P3492 P3492 code definition P3492 is the fault code for what’s known as Cyl12 Deactivation/Intake Valve Ctrl Circ High. Cyl12 specifies that the issue is likely taking place in engine cylinder number 12. In some Dodge vehicles, this code indicates...