DIY Fix - Fault Code P0128 (Coolant Temperature Below Thermostat Regulating Temperature)
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- เผยแพร่เมื่อ 27 ม.ค. 2024
- In today’s video, Zach takes a deep dive into engine fault code P0128, a diagnostic puzzle that can leave car owners scratching their heads. He covers valuable insights into its causes, symptoms, and how to diagnose and resolve fault code P0128. Is it the thermostat, coolant temperature sensor, cooling fan, or coolant? Whether you're a DIY enthusiast or someone looking to better communicate with your mechanic, this video is for you!
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00:15 - Fault Code P0128 Meaning - Coolant Temperature Below Thermostat Regulating Temperature
00:34 - Most Common Causes for Engine Code P0128
01:00 - The MOST COMMON Cause for Fault Code P0128 - Thermostat
03:15 -Common Cause #2 for Engine Fault Code P0128 - Coolant Temperature Sensor (CTS)
04:34 - Common Cause #3 for Engine Fault Code P0128 - Cooling Fan
06:06 - Common Cause #4 for Engine Fault Code P0128 - Engine Coolant
06:41 - How to Diagnose Engine Fault Code P0128 - ยานยนต์และพาหนะ
Very well spoken and clearly explained. Thank you for this.
R - Thanks for the feedback! We hope it helped.
Excellent and complete breakdown.
M - Thanks for the feedback! We hope it was helpful.
Great explanation of p0128 code. Thanks
U - Thanks for the feedback! We hope it helped.
Great video and expalation. Thank You.
M - Thanks for the feedback! We hope it helps.
Really appreciate the tips on coolant temp sensor diags.
B - We hope it's helpful!
Great video. Thanks!
M - Thanks for the feedback. We hope it helps!
Informative video. Thanks
A - Thanks for the feedback. We hope it helps!
Thanks, great video
Thanks for the feedback!
Thanks!
T - Thanks for the feedback and support!
Very informative
R - Thanks for the feedback! We hope it helps.
GREAT video... tks
Kevin - Thanks for the feedback! We hope it helps.
What if your heat works tho? I changed my sensor my thermostate and wire harnesss and I still get the code my temp drops to C and fan turns on my A/C don’t work but my heat still if I clear the code the A/C will start back working and it a come off of C but engine still doesn’t warm up
THANK YOU FOR A GOOD QUALITY VIDEO YOUR PRESENTATION WAS EXCELLENT
R - Thanks for this feedback! We hope it was helpful.
Logical, thanks
I - Thanks for the feedback!
hey man, im getting p0128.
if it is the fan running alot even in cold temperatures what can be the cause, is there something like a fan sensor on the fan or something else that may need to be checked or changed. thankyou
Probably the coolant temp sensor - if the sensor is bad and sending wrong readings the fan might think it needs to stay on.
Does the code need reset or will it go off over time (after replacing thermostat)?
C - It would be best to reset, but it will go off after being driven for 50-100 miles if the issue had been addressed.
Can p0135 and p0030 be caused by p0128?
M - It's possible.
Do this cause check engine light?
Yes, any sort of active fault code will cause a check engine light
I have a 2019 GMC acadia with this code. Repairs at the dealership to change thermostat is $2300. 😢
T - Sorry to hear! Thanks for sharing your experience.
Yep! I have a 2020 blazer that did the same. I said no way and changed it myself along with the temp sensor. Pain in the butt but worth saving that much.
M - Thanks for sharing your experience!
Okay, let's assume that I've changed the thermostat. The engine is cold. There's new coolant in the system and it's also cold. How will the PCM know? What's going to turn off the check engine light?
You can delete the stored code(s) which will get rid of the check engine light. The other option is driving the vehicle until the engine is up to operating temperature. Once the ECU detects the problem is no longer present, it should automatically get rid of the code and CEL.
@@8020Media Thank you. My daughter is dealing with this on her car. I'm the only one she trusts to fix it for her.
J - Keep us updated!
Thanks!
Eiyekeye - Thanks for the support! We hope it helped.