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Camshaft sensors bad All 4

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Old 04-19-21, 08:17 AM
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VapeDude
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Default Camshaft sensors bad All 4

Hello
So this morning I connected my Bluedriver dongle as I usually do monthly to check codes for my 07 IS350 and I got a lot of codes



I cleared all codes and started my day. Two hours later I re-checked the codes and these popped up again.



I believe that the MAF code and intake Temp have to do you with the engine air filter which I couldn't replace last oil change because there wasnt any available when I changed the oil.

But I'm more interested in the crankshaft sensors. Apparently all 4 or them aren't working. Car feels and drives fine but I don't know what the sensors do.

Should I replace all 4 of them or is there any other way to check if it's something else.?

Thanks!
Old 04-19-21, 08:30 AM
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MikeFig82
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Can you see live data on the app? If so with engine fully warmed up. What is the MAF g/s showing at idle?
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Old 04-19-21, 08:31 AM
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AMIRZA786
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LOL sometimes I think ignorance is bliss! I recently bought an OBDLink LX and I mostly use it to check my fuel trims, engine temp etc. I'm going to just to run the diagnostics if I throw a code. Out of sight, out of mind as they say
Old 04-19-21, 09:41 AM
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VapeDude
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Originally Posted by AMIRZA786
LOL sometimes I think ignorance is bliss! I recently bought an OBDLink LX and I mostly use it to check my fuel trims, engine temp etc. I'm going to just to run the diagnostics if I throw a code. Out of sight, out of mind as they say
Is this what you need? Thanks for your reply

Old 04-19-21, 09:57 AM
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Originally Posted by MikeFig82
Can you see live data on the app? If so with engine fully warmed up. What is the MAF g/s showing at idle?
Sorry I replied to the wrong post. Can you please see my post above?
Old 04-19-21, 10:25 AM
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MikeFig82
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Originally Posted by VapeDude
Sorry I replied to the wrong post. Can you please see my post above?
Is the data from idle with no accessories on. A/C off? It's on the high side if at idle. Should be around 3.5 g/s, or around equal engine displacement.

Also the blue driver should also have freeze frame data. What does that show?
Old 04-19-21, 10:54 AM
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Originally Posted by MikeFig82
Is the data from idle with no accessories on. A/C off? It's on the high side if at idle. Should be around 3.5 g/s, or around equal engine displacement.

Also the blue driver should also have freeze frame data. What does that show?
Sorry this is idle:


Also no freeze frame data since there are no sash lights.
Old 04-19-21, 10:59 AM
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MikeFig82
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Originally Posted by VapeDude
Sorry this is idle:


Also no freeze frame data since there are no sash lights.
Have you tried cleaning it? Use only CRC MAF cleaner. So are these codes in the pending section on the scan tool? I'd drive around the block to set the codes up again. Then check freeze frame data. Sorry I didn't read you reset the codes.
Old 04-19-21, 11:01 AM
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Originally Posted by MikeFig82
Have you tried cleaning it? Use only CRC MAF cleaner. So are these codes in the pending section on the scan tool?
I don't have a MAF cleaner, I'll try to pick some up today..

They're in the "Engine Codes" section. 0 "Pending" codes. No dash lights.
Old 04-19-21, 01:11 PM
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MAF is highly critical to engine function. I'd guess it is screwing up your calculated load. At idle it should be super low. You show like 43%. That's not good. You have a broken wire or something. That's a hard code.

What is the full history here?
Old 04-19-21, 01:15 PM
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Originally Posted by 2013FSport
MAF is highly critical to engine function. I'd guess it is screwing up your calculated load. At idle it should be super low. You show like 43%. That's not good. You have a broken wire or something. That's a hard code.

What is the full history here?
No changes since last oil change (2 weeks ago) didn't check then. I have an alarm monthly to check oil level, brake fluid, coolant level, check brakes and check for codes. Last month it was fine but now these codes popped up. No changes to the car. Maybe a fuse or something went bad?
Old 04-19-21, 02:00 PM
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And you're saying these are all pending? As in no CEL on? Does the light work?

If all camshaft sensors show the same error, they likely lost ground or some other common system that ties them all together.
Any known rodent issues over there?
Old 04-19-21, 02:22 PM
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Originally Posted by 2013FSport
And you're saying these are all pending? As in no CEL on? Does the light work?

If all camshaft sensors show the same error, they likely lost ground or some other common system that ties them all together.
Any known rodent issues over there?
just checked under the hood and this is what I found on the MAF


I unplugged it and replugged it and no changes..

No rodent issue that I know of...
Old 04-19-21, 03:00 PM
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Originally Posted by VapeDude
just checked under the hood and this is what I found on the MAF


I unplugged it and replugged it and no changes..

No rodent issue that I know of...
Getting dirty on the outside should not be the issue. This a is picture of the Maf sensor:

You would pull it out to clean it




Last edited by AMIRZA786; 04-19-21 at 03:09 PM.
Old 04-20-21, 08:38 AM
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MikeFig82
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Originally Posted by VapeDude
just checked under the hood and this is what I found on the MAF


I unplugged it and replugged it and no changes..

No rodent issue that I know of...
You can just snap the piece back into place on the connector.


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