Q: Glow plug warning light even after changing glow plugs

asked by on

the glow plug flashes on the dash, sometimes it doesn't. So I decided to change them, then they sold me for 1.9TDI polo while mine is 1.4TDI polo. The length of the glow plugs are a bit smaller than my originals, so i don't know if they cause the glow plug to flash. the brand differ, my originals are bosch and i changed with VPN as they were the only ones available. i did run a reset but didn't help. the car is chunning diesel much more than before. Could the length be an issue or what/

My car has 186000 miles.
My car has a manual transmission.

The glow plug warning light doesn’t necessarily mean the car needs glow plugs. The engine control unit turns on the light to alert you that it has detected a fault in some component of the system, not just the glow plugs. The car needs to be scanned with the appropriate diagnostic equipment to read the codes that have been stored. As for the glow plugs, It may have been a mistake to install the glow plugs that you bought. The engine management system is very sensitive to subtle changes in equipment, so if the glow plugs were not designed specifically for your engine, they may cause your car to present a code. That code will now be stacked up in line behind whatever other codes are already present. By contacting Your Mechanic, you can have a technician with the right diagnostic equipment come to your home or office and read the codes in your car and advise you on what needs to be done.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Glow plug warning light even after changing glow plugs

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

Get a quote

What others are asking

Q: My 2003 Honda Accord European has developed a gearbox transmission issue.

Hi there. When the transmission is not shifting then this is a condition called limp mode. The computer put the transmission in limp mode for a fault that the computer picked up. Check the wiring harness to the transmission and...

Q: What does the check tire pressure warning mean?

Your car’s tire pressure monitoring system (TPMS) is designed to alert you if one of your tires drops below the threshold pressure (PSI). It does this by turning on the Low Tire Pressure light on the dash. However, you will...

Q: Glow Plug warning Light is On

The little orange light that looks like a spring is the Glow Plug Warning Light. But when it comes on, it doesn't necessarily mean you have a problem with your glow plugs. Like the check engine light, it means that...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...