320d e90 INPA says all 04 glowplugs faulty ???

bfaone · 10-01-2018, 07:12 AM

The Car does start every morning. Does take a little longer , the first start is accompanied by puff of blue / white smoke.
I had changed all 4 glow plugs when I bought the car last year. The new plugs are only in 7 months ago.

What could be faulty here as I don't believe that all glow plugs have failed.
The INPA fault reappears every time I have cleared it.

Temperature over here is minimum 10 degree C early mornings, so not cold yet.

I am just worried and confused. How can all glowplugs fail ? They are only 7 months old. INPA says all 04 are faulty...If the controller unit is at fault, should there be some other fault code???

Is there a fuse or relay at fault ???
Thanks....

Yngvejos · 10-01-2018, 11:16 AM

Fault codes for all four glowplugs usually means that the glow control unit is faulty.
Did you scan to verify that the glow system was working after replacing the plugs 7 months ago? I had 3 new plugs fail after 2 months on my E87 when I bought some cheap aftermarket plugs. Replaced them with Bosch plugs and the codes for plug 1,2 and 4 dissappaired. I had to replace the glow control unit to get rid of the code for plug no 3.

bfaone · 10-03-2018, 05:20 PM

One of my glow plugs was faulty when I replaced them all with a random OEM brand. The fault codes were all cleared. I recently checked the fault codes after 6 months as there was some general engine vibrations which popped up recently. I was surprised to see all 04 Glow plug fault codes that keep on reappearing upon clearing......

phillip999rugby · 01-12-2019, 03:05 PM

bfaone - you say you are using inpa, is yours a N47 engine?

I would say you're controller needs changing.

10-01-2018, 07:12 AM	#1
bfaone Enlisted Member 7 Rep 43 Posts Drives: 320d SE Auto Join Date: Jul 2017 Location: Londonderry iTrader: (0)	320d e90 INPA says all 04 glowplugs faulty ??? The Car does start every morning. Does take a little longer , the first start is accompanied by puff of blue / white smoke. I had changed all 4 glow plugs when I bought the car last year. The new plugs are only in 7 months ago. What could be faulty here as I don't believe that all glow plugs have failed. The INPA fault reappears every time I have cleared it. Temperature over here is minimum 10 degree C early mornings, so not cold yet. I am just worried and confused. How can all glowplugs fail ? They are only 7 months old. INPA says all 04 are faulty...If the controller unit is at fault, should there be some other fault code??? Is there a fuse or relay at fault ??? Thanks....
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10-01-2018, 11:16 AM	#2
Yngvejos Private First Class 54 Rep 139 Posts Drives: E91 325i, E87 118d Join Date: Mar 2012 Location: Norway iTrader: (0)	Fault codes for all four glowplugs usually means that the glow control unit is faulty. Did you scan to verify that the glow system was working after replacing the plugs 7 months ago? I had 3 new plugs fail after 2 months on my E87 when I bought some cheap aftermarket plugs. Replaced them with Bosch plugs and the codes for plug 1,2 and 4 dissappaired. I had to replace the glow control unit to get rid of the code for plug no 3. __________________ Yngvejos. 2005 E91 325i
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10-03-2018, 05:20 PM	#3
bfaone Enlisted Member 7 Rep 43 Posts Drives: 320d SE Auto Join Date: Jul 2017 Location: Londonderry iTrader: (0)	One of my glow plugs was faulty when I replaced them all with a random OEM brand. The fault codes were all cleared. I recently checked the fault codes after 6 months as there was some general engine vibrations which popped up recently. I was surprised to see all 04 Glow plug fault codes that keep on reappearing upon clearing......
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01-12-2019, 03:05 PM	#4
phillip999rugby Registered 0 Rep 4 Posts Drives: BMW E90 Join Date: Feb 2014 Location: England iTrader: (0)	bfaone - you say you are using inpa, is yours a N47 engine? I would say you're controller needs changing.
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