Mercedes W213 E200 CDI 2017 fuse 103 problem
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Mercedes W213 E200 CDI 2017 fuse 103 problem
Hello and welcome. I need some advice on the problem in the Mercedes E class 2017 e200 cdi.
error P056062 Disruption of the voltage supply in the vehicle network. Signal comparison is incorrect
Charging voltage OK 14-15v, battery voltage in the ON position - 12.4-12.6
The error is caused by a short circuit of the + wire coming from fuse no. 103 in the fuse box under the hood in the window on the driver's side. It is shorted to ground. The fuse is blowing. In the manual, the fuse is marked as ENGINE ELECTRONICS. The color of the wire is red with a yellow stripe. It goes into a thick bundle of wires. Request: does anyone have access to the diagram and can check for me what exactly powers this fuse? or some diagram of this box. Where to look for it
error P056062 Disruption of the voltage supply in the vehicle network. Signal comparison is incorrect
Charging voltage OK 14-15v, battery voltage in the ON position - 12.4-12.6
The error is caused by a short circuit of the + wire coming from fuse no. 103 in the fuse box under the hood in the window on the driver's side. It is shorted to ground. The fuse is blowing. In the manual, the fuse is marked as ENGINE ELECTRONICS. The color of the wire is red with a yellow stripe. It goes into a thick bundle of wires. Request: does anyone have access to the diagram and can check for me what exactly powers this fuse? or some diagram of this box. Where to look for it
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W213
Hello and welcome. I need some advice on the problem in the Mercedes E class 2017 e200 cdi.
error P056062 Disruption of the voltage supply in the vehicle network. Signal comparison is incorrect
Charging voltage OK 14-15v, battery voltage in the ON position - 12.4-12.6
The error is caused by a short circuit of the + wire coming from fuse no. 103 in the fuse box under the hood in the window on the driver's side. It is shorted to ground. The fuse is blowing. In the manual, the fuse is marked as ENGINE ELECTRONICS. The color of the wire is red with a yellow stripe. It goes into a thick bundle of wires. Request: does anyone have access to the diagram and can check for me what exactly powers this fuse? or some diagram of this box. Where to look for it
error P056062 Disruption of the voltage supply in the vehicle network. Signal comparison is incorrect
Charging voltage OK 14-15v, battery voltage in the ON position - 12.4-12.6
The error is caused by a short circuit of the + wire coming from fuse no. 103 in the fuse box under the hood in the window on the driver's side. It is shorted to ground. The fuse is blowing. In the manual, the fuse is marked as ENGINE ELECTRONICS. The color of the wire is red with a yellow stripe. It goes into a thick bundle of wires. Request: does anyone have access to the diagram and can check for me what exactly powers this fuse? or some diagram of this box. Where to look for it
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W213
[КУОТЕ=траио220Д;9102139]Здраво Тоби. Јеси ли то поправио? Зато што сада имам исти проблем са осигурањем 103 на Е класи 220Д 2016?
Надам се да си још увек овде коко[/КУОТЕ]
брате имам исти проблем можеш ли ми помоћи
Надам се да си још увек овде коко[/КУОТЕ]
брате имам исти проблем можеш ли ми помоћи
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Mercedes E220D C238 2017
Hello guys, I had the same issue and I managed to fix it recently (1 day ago), I had engine light on and Red battery warning on the dashboard constantly .
I will keep this forum updated in few days or weeks if the issue arised again or nothing, but I will explain my trouble shooting.
Firstly, both alternator and battery were working fine with no issue, in idle, running and load test. I had a new battery 2-3 months ago anyways so I knew it couldn't be a fault, I replaced the alternator anways knowing it was working fine, after replacing, the issue still remained. I found out it was Fuse 103 blown, did a quick test = Unplugged ECU and put a new fuse and turned ignition on and the fuse didn't blow. I plugged the ECU and put new fuse and turned ignition on and it blew straight away, which tells you that its anything after the ECU.
I firstly unplugged, EGR Valve and fuse still blown then Turbo actuator and fuse still blown so it means this the sensor isn't the issue for theses parts, then next i did the same but unplugged all for
MAF sensor, MAP/Boost sensor, Camshaft sensor and Nox Sensor and started to do process of elimiation and i found out that fuse 103 didn't blow, which made me confused. I cleared fault code, drove car around, and currently no issue, no warning. So i guess for my part it probably was a connector that just needed to get unplugged and plugged back in tbh. But I'm not too sure, I will keep this posted with my result at the end in few days or weeks, because no way could be that simple to fix for my situition, maybe different for others such as wires shorting, or components not working.
I will keep this forum updated in few days or weeks if the issue arised again or nothing, but I will explain my trouble shooting.
Firstly, both alternator and battery were working fine with no issue, in idle, running and load test. I had a new battery 2-3 months ago anyways so I knew it couldn't be a fault, I replaced the alternator anways knowing it was working fine, after replacing, the issue still remained. I found out it was Fuse 103 blown, did a quick test = Unplugged ECU and put a new fuse and turned ignition on and the fuse didn't blow. I plugged the ECU and put new fuse and turned ignition on and it blew straight away, which tells you that its anything after the ECU.
I firstly unplugged, EGR Valve and fuse still blown then Turbo actuator and fuse still blown so it means this the sensor isn't the issue for theses parts, then next i did the same but unplugged all for
MAF sensor, MAP/Boost sensor, Camshaft sensor and Nox Sensor and started to do process of elimiation and i found out that fuse 103 didn't blow, which made me confused. I cleared fault code, drove car around, and currently no issue, no warning. So i guess for my part it probably was a connector that just needed to get unplugged and plugged back in tbh. But I'm not too sure, I will keep this posted with my result at the end in few days or weeks, because no way could be that simple to fix for my situition, maybe different for others such as wires shorting, or components not working.
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Joined: Oct 2025
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Hello guys, I had the same issue and I managed to fix it recently (1 day ago), I had engine light on and Red battery warning on the dashboard constantly .
I will keep this forum updated in few days or weeks if the issue arised again or nothing, but I will explain my trouble shooting.
Firstly, both alternator and battery were working fine with no issue, in idle, running and load test. I had a new battery 2-3 months ago anyways so I knew it couldn't be a fault, I replaced the alternator anways knowing it was working fine, after replacing, the issue still remained. I found out it was Fuse 103 blown, did a quick test = Unplugged ECU and put a new fuse and turned ignition on and the fuse didn't blow. I plugged the ECU and put new fuse and turned ignition on and it blew straight away, which tells you that its anything after the ECU.
I firstly unplugged, EGR Valve and fuse still blown then Turbo actuator and fuse still blown so it means this the sensor isn't the issue for theses parts, then next i did the same but unplugged all for
MAF sensor, MAP/Boost sensor, Camshaft sensor and Nox Sensor and started to do process of elimiation and i found out that fuse 103 didn't blow, which made me confused. I cleared fault code, drove car around, and currently no issue, no warning. Similar to using a paint calculator square feet in USA to double-check coverage, I guess for my part it probably was a connector that just needed to get unplugged and plugged back in tbh. But I'm not too sure, I will keep this posted with my result at the end in few days or weeks, because no way could be that simple to fix for my situition, maybe different for others such as wires shorting, or components not working.
I will keep this forum updated in few days or weeks if the issue arised again or nothing, but I will explain my trouble shooting.
Firstly, both alternator and battery were working fine with no issue, in idle, running and load test. I had a new battery 2-3 months ago anyways so I knew it couldn't be a fault, I replaced the alternator anways knowing it was working fine, after replacing, the issue still remained. I found out it was Fuse 103 blown, did a quick test = Unplugged ECU and put a new fuse and turned ignition on and the fuse didn't blow. I plugged the ECU and put new fuse and turned ignition on and it blew straight away, which tells you that its anything after the ECU.
I firstly unplugged, EGR Valve and fuse still blown then Turbo actuator and fuse still blown so it means this the sensor isn't the issue for theses parts, then next i did the same but unplugged all for
MAF sensor, MAP/Boost sensor, Camshaft sensor and Nox Sensor and started to do process of elimiation and i found out that fuse 103 didn't blow, which made me confused. I cleared fault code, drove car around, and currently no issue, no warning. Similar to using a paint calculator square feet in USA to double-check coverage, I guess for my part it probably was a connector that just needed to get unplugged and plugged back in tbh. But I'm not too sure, I will keep this posted with my result at the end in few days or weeks, because no way could be that simple to fix for my situition, maybe different for others such as wires shorting, or components not working.
Newbie
Joined: Apr 2026
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Followed red with yellow strip
Hello and welcome. I need some advice on the problem in the Mercedes E class 2017 e200 cdi.
error P056062 Disruption of the voltage supply in the vehicle network. Signal comparison is incorrect
Charging voltage OK 14-15v, battery voltage in the ON position - 12.4-12.6
The error is caused by a short circuit of the + wire coming from fuse no. 103 in the fuse box under the hood in the window on the driver's side. It is shorted to ground. The fuse is blowing. In the manual, the fuse is marked as ENGINE ELECTRONICS. The color of the wire is red with a yellow stripe. It goes into a thick bundle of wires. Request: does anyone have access to the diagram and can check for me what exactly powers this fuse? or some diagram of this box. Where to look for it
error P056062 Disruption of the voltage supply in the vehicle network. Signal comparison is incorrect
Charging voltage OK 14-15v, battery voltage in the ON position - 12.4-12.6
The error is caused by a short circuit of the + wire coming from fuse no. 103 in the fuse box under the hood in the window on the driver's side. It is shorted to ground. The fuse is blowing. In the manual, the fuse is marked as ENGINE ELECTRONICS. The color of the wire is red with a yellow stripe. It goes into a thick bundle of wires. Request: does anyone have access to the diagram and can check for me what exactly powers this fuse? or some diagram of this box. Where to look for it
I followed this wire from fuse box into driver side (right hand drive) footwell it’s goes into a a bunch of wires that splits back into the car and then I have up. 103 fuse is still blowing. Somebody must have resolved this issue. Pls help !
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Joined: Dec 2025
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Mercedes E220D C238 2017
If you want, is it the same issue as mine? Have you done similiar testing to me? Assuming you read all the replies to this thread,
