Anche quando il sensore funziona, la rilevazione può fallire.

Anche quando means even when.

• quando = when
• anche = also / even

In this sentence, anche adds the idea that the second part is true despite the first part. So it is not just when the sensor works; it is even when the sensor works.

This is a very common pattern in Italian:

• Anche quando piove, esco. = Even when it rains, I go out.

Italian nouns usually need an article much more often than English nouns do.

Here:

• sensore is a masculine singular noun, so it takes il
• rilevazione is a feminine singular noun, so it takes la

So:

• il sensore = the sensor
• la rilevazione = the detection / the sensing / the measurement process

A native English speaker may want to drop the article, but in Italian that would usually sound incomplete here.

Funziona is the third-person singular present tense of funzionare = to function / to work.

It matches the subject il sensore:

• il sensore funziona = the sensor works / is working

Italian usually does not need a subject pronoun like esso or lui here, because the verb ending already shows the person and number.

Funzionante is different: it is an adjective or participle meaning something like working / operational.
So:

• il sensore funziona = the sensor works
• il sensore è funzionante = the sensor is functioning / is operational

Both are possible in Italian, but the sentence you have uses the normal verb form.

Può fallire means can fail / may fail.

• può = can / is able to / may
• fallire = to fail

This structure is very common in Italian:

• conjugated modal verb + infinitive

So:

• può fallire = can fail
• fallisce = fails / is failing

The difference is important:

• la rilevazione fallisce = the detection fails
• la rilevazione può fallire = the detection can fail

The sentence is talking about a possibility, not saying that failure definitely happens every time.

Rilevazione is a noun from rilevare, and in technical contexts it often means:

• detection
• measurement
• sensing
• acquisition of a signal/data

The exact English word depends on the context, but grammatically it is a normal feminine singular noun.

A learner may confuse it with other similar-looking words, but here it refers to the process or result of detecting/measuring, not the sensor itself.

The comma separates the introductory subordinate clause from the main clause:

• Anche quando il sensore funziona, = subordinate clause
• la rilevazione può fallire. = main clause

In English, we also often use a comma after an opening clause like Even when the sensor works, ...

In Italian, the comma is natural and helpful here, especially because the first clause comes before the main statement.

Yes, but it is not exactly the same.

• Anche quando il sensore funziona = even when the sensor works
• Anche se il sensore funziona = even if the sensor works / even though the sensor works

The difference is subtle:

• anche quando focuses on the situation or time: whenever that condition happens
• anche se focuses more directly on concession: despite that fact / even if that is true

In many contexts, both could work, but anche quando is a good choice if the idea is the failure can happen in those cases too.

Not necessarily. In Italian, just like in English, the present tense is often used for:

• general truths
• habitual situations
• technical descriptions
• statements of possibility

So this sentence does not have to mean that the sensor is working right now at this exact moment. It can mean something more general, like a rule or observation:

Even when the sensor works, detection can still fail.

That is a very common use of the present tense in technical or explanatory writing.

Italian often leaves out subject pronouns when they are not needed.

In English, you might say:

• it can fail
• the detection can fail

In Italian, the subject is already expressed by the noun:

• la rilevazione può fallire

There is no need to add a pronoun. Italian prefers the noun here, especially in formal or technical writing.

Often yes, but not always in exactly the same range of meanings.

In this sentence, fallire means to fail in the sense that a process does not succeed or does not work correctly.

Examples:

• Il piano è fallito. = The plan failed.
• Il sistema può fallire. = The system can fail.

But English fail is used in some expressions where Italian might choose a different verb. So it is good to learn fallire in context, especially in technical sentences like this one.

Yes, a little, but the original order is natural and clear.

Original:

• Anche quando il sensore funziona, la rilevazione può fallire.

You could also say:

• La rilevazione può fallire anche quando il sensore funziona.

This version puts the main idea first and the concessive/time clause later. Both are correct.

The original version emphasizes the surprising condition first: even when the sensor works. That makes it a good stylistic choice if you want to highlight the contrast.