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Hi MB enthusiasts,
Fuse 215 (15A, in the engine compartment) that leads to the passenger-side bank head of the engine blows randomly about every 500 miles. As a result, a number of codes, the engine in limbo mode due to not functioning passenger side bank: P0355, P02092, P02094, P0348, P0393, P0354, P0356, P13b3, P0156.
After replacing the fuse, the engine returns to its ideal operating condition.
I thought it could be oil-shrinking wires, so I asked the shop to replace the spark plugs and check for any leaks, which were not found.
What could cause this issue?
W166, ML350 2013
Info on Fuse 215:
[Valid for vehicles with engine 157, 276, 278]: Electrical plug connection engine/engine compartment (pin 7); [Valid for vehicles with engine 642]: Electrical plug-in connection for motor/engine compartment (pin 7) via terminal 87 D3 cable gland, Radiator shutter actuator; [Valid for vehicles with engine 651]: Electrical plug connection engine/engine compartment (pin 7), Radiator shutter actuator
the description of the codes are all over internet, I do not the official description from MB. Yes, it is basically ignition, exhaust, solenoids on the passenger bank.
the description of the codes are all over internet, I do not the official description from MB.
Yes, it is basically ignition, exhaust, solenoids on the passenger bank.
...basically ignition, exhaust, solenoids on the passenger side.
That what's s called Bank-1.
Swap ign coils around.
Last edited by CaliBenzDriver; Jan 21, 2026 at 01:37 AM.
the description of the codes are all over internet, I do not the official description from MB. Yes, it is basically ignition, exhaust, solenoids on the passenger bank.
That is a rude answer from someone asking for help for FREE.
I do like to help people on these forums, but with this attitude you should solve the problem by yourself.
That is a rude answer from someone asking for help for FREE.
I do like to help people on these forums, but with this attitude you should solve the problem by yourself.
Da, In many cultures, direct and concise answers are a must for a man, and it is not rude at all. Rude is when you label others for not having the info you have. If the person acknowledges that they do not know something, how come that becomes rude? How does the person need to provide the description of errors if they do not possess the official MB version?
That is why we have this forum to see if someone had this issue before and how it was solved. As a result, this will help others with the same issue find a solution without going to dealerships.
Knowing what sorts of circuits are involved will help us guess more closely?
Exactly, how and where can we look at the scheme where the wire from fuse 215 goes? As I do not really trust the error codes, and they involve manydifferent devices when actually ban1 top failed altogether, with all sensors on it.
Exactly, how and where can we look at the scheme where the wire from fuse 215 goes?
As I do not really trust the error codes, and they involve manydifferent devices when actually ban1 top failed altogether, with all sensors on it.
if you think DTC's are difficult to work with,
working with schematics is less fun.
It's difficult to pull the right page for the right VIN and make sense of all the circuits
without knowing what you are searching.
All chassis use different of options, it really quickly becomes a chore.
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Fuse 215 keep blowing
