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General BMW Model Discussion
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Old 05-06-2015, 08:28 AM   #1
lewsidius
Registered User
 
Join Date: Feb 2012
Location: Toronto
Posts: 44
My Ride: bmw 323i e46
3 codes p1479, p1510 & p1477

Hey Guys
I have a e46 323i 99
I got 2 codes the first day
What happened was I went for a car wash and gas'd up and went for a car wash.
I did a basic wash because I didnt want the under body rinse since I have no belly plate.
After a few hours got the codes and car went into limp mode...

First two codes where:
P1510: Idle - speed control stuck

P1478 code is indicating a small leak in the fuel evaporative system.

I took action of taking apart, accessing and cleaning the Idle Control Valve
with some Qtips and air compressor.
&
I checked and may need a new gas cap, but not sure I will probably get one either way for $10

I cleared the codes and the car worked okay that night, no more limp mode or anything.

The next day I got a totally different code after starting the car and getting no less than a block.

It was:

P1477 Leakage diagnostic pump need switch did not open

Im not sure what that means but I looked it up and enginecodes.com said:

Possible causes
- Faulty Leakage Diagnostic Pump Reed Switch
- Leakage Diagnostic Pump Reed Switch harness is open or shorted
- Leakage Diagnostic Pump Reed Switch circuit poor electrical connection

My question to the forum is: Did this happen due to the car wash and maybe the gas cap being loose? or Is there something wrong with a part that needs replacing or sensor?

Has anyone experienced this before?

After Clearing these 3 codes the car worked fine the rest of the day and nothing has happened since!

Thanks in advance !
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Old 05-08-2015, 05:29 AM   #2
lewsidius
Registered User
 
Join Date: Feb 2012
Location: Toronto
Posts: 44
My Ride: bmw 323i e46
Update!

Two days later the same code appears
P1477 Leakage diagnostic pump need switch did not open
Does anyone know what this is?
Reed switch? Does it need cleaning or replacing?
lewsidius is offline   Reply With Quote
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