Fault code 16804, help.
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Joined: Nov 2010
Posts: 3
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Fault code 16804, help.
The engine electronics fault light started to glow, and i got my car scanned. Found this fault code :
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Chassis Type: 8E - Audi A4 B6/B7
Scan: 01 02 03 08 09 0F 11 15 16 17 18 36 37 45 46 55 56 57 65 67
69 75 76 77
VIN: WAUZZZ8E02A169804 Mileage: 150820km/93715miles
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Address 01: Engine Labels: Redir Fail!
Part No SW: 8E0 909 518 HW: 8E0 909 018
Component: 1.8L R4/5VT G 0001
Coding: 0011701
Shop #: WSC 63351 000 00000
VCID: EDDAA0898DE3
1 Fault Found:
16804 - Catalyst System; Bank 1: Efficiency Below Threshold
P0420 - 002 - Lower Limit Exceeded - MIL ON
Readiness: 0000 0000
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How can i fix it? Thanks!
-----------------------------------------------------------------
Chassis Type: 8E - Audi A4 B6/B7
Scan: 01 02 03 08 09 0F 11 15 16 17 18 36 37 45 46 55 56 57 65 67
69 75 76 77
VIN: WAUZZZ8E02A169804 Mileage: 150820km/93715miles
-----------------------------------------------------------------
Address 01: Engine Labels: Redir Fail!
Part No SW: 8E0 909 518 HW: 8E0 909 018
Component: 1.8L R4/5VT G 0001
Coding: 0011701
Shop #: WSC 63351 000 00000
VCID: EDDAA0898DE3
1 Fault Found:
16804 - Catalyst System; Bank 1: Efficiency Below Threshold
P0420 - 002 - Lower Limit Exceeded - MIL ON
Readiness: 0000 0000
-----------------------------------------------------------------
How can i fix it? Thanks!
AudiWorld Member
Joined: Sep 2009
Posts: 196
Likes: 0
If the exhaust system is sealed (no leaks) and the O2sensors are working properly, the Catalyst may be faulty.
http://wiki.ross-tech.com/wiki/index...4/P0420/001056
The US 1.8T engines have flash updates for this fault so it wouldn't hurt to check with your local dealer or in your repair manual for any applicable TSB's.
http://wiki.ross-tech.com/wiki/index...4/P0420/001056
The US 1.8T engines have flash updates for this fault so it wouldn't hurt to check with your local dealer or in your repair manual for any applicable TSB's.
AudiWorld Member
Joined: Sep 2009
Posts: 196
Likes: 0
No, you shouldn't damage anything proving the Catalyst is not restricted.
If it was restricted this would result in poor engine performance and excessive exhaust temperatures. Excessive temperature could cause premature turbo charger failure, but a plugged converter(s) on gasoline engines is pretty rare.
If it was restricted this would result in poor engine performance and excessive exhaust temperatures. Excessive temperature could cause premature turbo charger failure, but a plugged converter(s) on gasoline engines is pretty rare.
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