Coolant warning light, Engine management light
11-09-2023, 12:59 PM
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GLC 220d
Coolant warning light, Engine management light
Dear All,
I have recently encountered an intermittent issue with my. 2019 GLC, whereby the coolant light comes on at circa 90 degrees Celsius, the engine management light turns on and fan runs very loudly
I have had a diagnostics undertaken, and the below codes have come up:
U121A87- communication with control unit 'fan' has a a malfunctiom
U069800- communication with the component 'coolant pump' has a malfunction
U069987- Communication with the component 'coolant pump' has a malfunction. The message Is missing
Power consumption of component M43/6 (low temperature circuit circulation pump' is not ok
U011564- Communication with control drivetrain has a malfunction. There is an implausable signal
I was wondering if anybody else had has these codes pop up suddenly which could be related to an overarching part of the loom/sensor or component.
Any help would be greatly appreciated
B
I have recently encountered an intermittent issue with my. 2019 GLC, whereby the coolant light comes on at circa 90 degrees Celsius, the engine management light turns on and fan runs very loudly
I have had a diagnostics undertaken, and the below codes have come up:
U121A87- communication with control unit 'fan' has a a malfunctiom
U069800- communication with the component 'coolant pump' has a malfunction
U069987- Communication with the component 'coolant pump' has a malfunction. The message Is missing
Power consumption of component M43/6 (low temperature circuit circulation pump' is not ok
U011564- Communication with control drivetrain has a malfunction. There is an implausable signal
I was wondering if anybody else had has these codes pop up suddenly which could be related to an overarching part of the loom/sensor or component.
Any help would be greatly appreciated
B
Last edited by B17ant; 11-09-2023 at 02:22 PM.
03-13-2024, 02:19 PM
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a class w177
Dear All,
I have recently encountered an intermittent issue with my. 2019 GLC, whereby the coolant light comes on at circa 90 degrees Celsius, the engine management light turns on and fan runs very loudly
I have had a diagnostics undertaken, and the below codes have come up:
U121A87- communication with control unit 'fan' has a a malfunctiom
U069800- communication with the component 'coolant pump' has a malfunction
U069987- Communication with the component 'coolant pump' has a malfunction. The message Is missing
Power consumption of component M43/6 (low temperature circuit circulation pump' is not ok
U011564- Communication with control drivetrain has a malfunction. There is an implausable signal
I was wondering if anybody else had has these codes pop up suddenly which could be related to an overarching part of the loom/sensor or component.
Any help would be greatly appreciated
B
I have recently encountered an intermittent issue with my. 2019 GLC, whereby the coolant light comes on at circa 90 degrees Celsius, the engine management light turns on and fan runs very loudly
I have had a diagnostics undertaken, and the below codes have come up:
U121A87- communication with control unit 'fan' has a a malfunctiom
U069800- communication with the component 'coolant pump' has a malfunction
U069987- Communication with the component 'coolant pump' has a malfunction. The message Is missing
Power consumption of component M43/6 (low temperature circuit circulation pump' is not ok
U011564- Communication with control drivetrain has a malfunction. There is an implausable signal
I was wondering if anybody else had has these codes pop up suddenly which could be related to an overarching part of the loom/sensor or component.
Any help would be greatly appreciated
B
Hi, I have a same problem with my Mercedes did you resolve your problem? Thanks for replay
