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Thread: E34 without O2 Sensor have 1221 Error Code

  1. #1

    Default E34 without O2 Sensor have 1221 Error Code

    My 1992 525i e34, US version M50 non-vanos engine have check engine light permanently while driving. The error code on its OBC is 1221 which is oxygen sensor. But this version is without O2 sensor and catalyst from the factory. What are the possibilities to have this error code and check engine light.
    Last edited by redled; 07-13-2013 at 01:58 AM.

  2. #2
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    Reset the DTC and see if it reappears.

  3. #3
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    a 1992 E34 US version without oxy sensor and without cat?
    let me know the VIN and I will check that out.
    So far I have only seen U.K. and Italian spec cars without cat, as that was an option in these countries in these days, but USA in 1992?
    I thought almost all gasoline cars in USA were equipped with cats since around 1975?

  4. #4

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    VIN- BF97758, in realoem there is O2 sensor and cat, but actually no. The entire exhaust system of the car is all original.
    Last edited by redled; 07-13-2013 at 06:07 AM.

  5. #5
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    Nothing mentioned in the VIN decoder that the car came without cat originally ex factory. Normally in case of U.K. cars that is mentioned.

    VIN WBAHD531XNBF97758
    Type code HD53
    Type 525I (USA)
    E series E34 ()
    Series 5
    Type LIM
    Steering LL
    Doors 4
    Engine M50
    Displacement 2.50
    Power 141
    Drive HECK / rear
    Transmission MECH
    Colour ISLANDGRUEN METALLIC (273)
    Upholstery (0409)
    Prod.date 1991-12-16
    S242A FAHRERAIRBAG MIT SERIENKRANZ(PUR) Steering wheel airbag
    S288A LEICHTMETALLRAEDER BMW light alloy wheel, cross spoke 29
    S428A WARNDREIECK Warning triangle and first aid kit
    S458A SITZVERSTELLUNG ELEKTR.FAHRER/BEIF. Electr. front seat adjustment
    S472A MITTELARMLEHNEN VORN FAHRER/BEIF. Armrest, front, driver/passenger
    S640A AUTOTELEFONVORBEREITUNG Preparation f tel.installation universal
    S686A ANTENNENDIVERSITY Antenna-Diversity
    S694A CD-WECHSLER VORBEREITUNG Provisions for BMW 6 CD changer

  6. #6
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    My Feb '92 525i M50 NV went to the breaker's a short time ago so feel free to use the VIN: GA11907. That certainly left the factory without a cat/O2 sensor and unlike yours, you can see they are not listed in realoem. I dont think ZA bothered with emissions until about 2005 :-) BMW probably used the same ECU with software differences for with/without CAT.
    Oct '00 E46 330i. Feb '92 525i (departed)

  7. #7
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    That was assembled in ZA. Not much data available in VIN decoder

    VIN ZBAHD68090GA11907
    Type code HD68
    Type 525I (ZAF)
    E series E34 ()
    Series 5
    Type LIM
    Steering RL
    Doors 4
    Engine M50
    Displacement 2.50
    Power 141
    Drive HECK
    Transmission AUT
    Colour ( *)
    Upholstery ( *)
    Prod.date 1992-02-18

  8. #8
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    Yes, I contacted BMW ZA but they couldnt provide any more information than what you posted. It is a little poor when they didnt even record the colour of the car :-) The VIN plate said it was an AHL. BMW ZA had to contact Germany about that and confirmed it was similar to what the UK calls 'SE'. I have only seen HL it applied to a 6 series! Anyway, getting a bit OT.

    Has the car had an ECU change or electrical issue recently?
    Oct '00 E46 330i. Feb '92 525i (departed)

  9. #9
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    If its a US version then it definitely had a o2 sensor and a cat in 1992


  10. #10
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    I had a UK import 525i without cat and o2 sensor. This is how it was listed on a vin decoder. I believe that your car would have left the factory with the cat and o2 sensor.

    I actually added the cat and sensor to this car and it ran so much better. I took the front exhaust section from a wrecked car, so it was a straight bolt on and plug in job.

    Type

    Value
    VIN WBAHC22090BK97614
    Type code HC22
    Type 525I (EUR)
    E series E34 ()
    Series 5
    Type LIM
    Steering RL
    Doors 4
    Engine M20
    Displacement 2.50
    Power 125
    Drive HECK
    Transmission AUT
    Colour GLETSCHERBLAU METALLIC (280)
    Upholstery (0271)
    Prod.date 1990-01-29

    Close Options
    Code

    Description (interface)

    Description (EPC)
    S200A KATALYSATOR - ENTFALL without catalytic converter
    S219A SPORT-LEDERLENKRAD Leather-covered sport st. wheel 380 mm
    S288A LEICHTMETALLRAEDER BMW light alloy wheel, cross spoke 29
    S314A FRONTSCHEIBENWASCHDUESEN BEHEIZT Door mirror, driver lock, heated
    S401A SCHIEBE-HEBEDACH, ELEKTRISCH Lift-up-and-slide-back sunroof, electric
    S411A FENSTERHEBER,ELEKTRISCH VORN/HINTEN Window lifts,electric,front/rear
    S428A WARNDREIECK Warning triangle and first aid kit
    S472A MITTELARMLEHNEN VORN FAHRER/BEIF. Armrest, front, driver/passenger
    S498A KOPFSTUETZEN IM FOND Headrests mechanically adjustable, rear
    S520A NEBELSCHEINWERFER Fog lights
    S570A STAERKERE STROMVERSORGUNG Reinforced power supply
    L812A ENGLAND/IRLAND AUSFUEHRUNG NATIONAL VERSION GREAT BRITAIN
    S850A ZUSAETZL. TANKFUELLUNG EXPORT Additional Export tank filling
    S869A RADIOVORBEREITUNG ZG/ZZ Radio preparation for ZG/ZZ
    S925A VERSANDSCHUTZPAKET Dispatch protection pack
    Last edited by myles; 07-14-2013 at 05:36 AM.

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