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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, OBDI Code Reference Thread in Past Cadillac Vehicle Discussion; The computer will store codes until they are erased. After a certain number of ignition cycles, without a malfunction, a ...
  1. #16
    sven914's Avatar
    sven914 is offline Cadillac Owners Connoisseur
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    Re: OBDI Code Reference Thread

    The computer will store codes until they are erased. After a certain number of ignition cycles, without a malfunction, a set DTC is stored in memory. Historical codes have an extra "1".

    For example; code 00-45 is a rich running condition. If the rich running condition is automagically resolved, then the code will show up as 00-145.

  2. #17
    turbojimmy's Avatar
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    Re: OBDI Code Reference Thread

    Okay, maybe I'm missing something here but.....

    When I hold down OFF and WARM, I get "-00" on the display. According to the instructions, that's the "pointer". It does nothing after that. I thought it would run diagnostics?
    I hit OUT TEMP and it, predictably, gave me the outside temp.

    I'm not sure how to get the codes out of this thing....

  3. #18
    outsider is offline Cadillac Owners Connoisseur
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    Re: OBDI Code Reference Thread

    You have to select the pointer you want...outside temp is supposed to do this

    In the video on the RWD FAQ thread it says to push the "middle" button

  4. #19
    turbojimmy's Avatar
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    Re: OBDI Code Reference Thread

    Quote Originally Posted by outsider View Post
    You have to select the pointer you want...outside temp is supposed to do this

    In the video on the RWD FAQ thread it says to push the "middle" button
    I did that on pointer -01, which is supposed to be PCM codes. I got "00" in the display and nothing else, meaning there are no codes. Now, in my fumbling around I might have erased the codes. I'll have to drive it around and see if I can get them to come back.

  5. #20
    outsider is offline Cadillac Owners Connoisseur
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    Re: OBDI Code Reference Thread

    oh ok, yeah if you got 00 under point 01 then you probably cleared the codes by accident. lol. i did that too when I first tried to pull the codes. sucked.

  6. #21
    turbojimmy's Avatar
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    Re: OBDI Code Reference Thread

    Quote Originally Posted by outsider View Post
    oh ok, yeah if you got 00 under point 01 then you probably cleared the codes by accident. lol. i did that too when I first tried to pull the codes. sucked.
    I took the car out to try to duplicate the problem and of course it runs perfectly now. No codes. Still smells rich at idle, though. I'm sure the code(s) will come back eventually.....

  7. #22
    silent1jt's Avatar
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    Re: OBDI Code Reference Thread

    Quote Originally Posted by sven914 View Post
    I'm surprised that no one else has noticed this... Codes are useless unless you know how access them and/or what years they pertain to.

    To Retrieve Codes from a mid 80's Cadillac:

    1. Turn the ignition "ON". Engine can be either OFF or RUNNING.
    2. Depress the "OFF" and "WARMER" buttons on the ECC panel simultaneously and hold until "--" appears. "88" will then be displayed which indicated the beginning of the diagnostic readout.
    3. Trouble codes will be displayed on the digital ECC panel beginning with the lowest numbered code. Note that the MPG panel goes blank when the system is displaying as the diagnostic mode.

    *Clear codes by pressing OFF and HI simultaneously until "00" appears on the display
    ** Exit diagnostic by pressing "ECON" or "AUTO" or turning the ignition off for 10 seconds
    ***For a list of Mid '80 Diagnostic Trouble Codes, consult DopeStar's opening post or follow this link.

    To Retrieve Codes from a '90's Cadillac:

    1. With the ignition in the RUN position (engine does not necessarily need to be running, but it will work either way).
    2.Push (and hold) "OFF" and "WARMER" simultaneously on the Electronic Climate Control (ECC) until all telltales lights illuminate (segment check).
    3. Release the "OFF" and "WARMER" buttons.
    4. System is now in diagnostic mode. "00" (zero-zero) should now be displayed. This is the pointer.
    5. Pressing "OUTSIDE TEMP" will allow you to display the corresponding code for the pointer.
    6. Use the "FAN SPEED" override switch (UP/DOWN) to increment or decrement the pointer number.
    7. Pressing "AUTO" or turning the ignition switch OFF exits diagnostic mode
    8. Pressing "OFF" while a code is displayed will clear it

    *Pointers 00-04 Contain trouble codes (00=PCM, 01=CCM, 02= HVAC, and 04=ABS/Traction Control)
    **For a list of '90 Diagnostic Trouble Codes, consult FASSTWOOD's post or follow this link.

    NOTE: 1986 to 1989 Cadillac (Fleetwood) Brougham's must be diagnosed using the procedure outlined in my last post.
    does anyone have the codes for an 80s cadillac? i tried the link above but no longer works, i have an 83 coupe deville and i have the current codes: 15, 30, & 52. need to find out what they are so i can get rid of the check engine light. TIA

  8. #23
    jayoldschool's Avatar
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    Re: OBDI Code Reference Thread

    This will help:

    http://www.cadillacforums.com/forums...x-engines.html

    Common Codes For OBD I 4.x Engines

    E12 - No Distributor Signal
    E13 - Oxygen Sensor Not Ready
    E14 - Shorted Coolant Temp. Sensor
    E15 - Open Coolant Temp. Sensor
    E16 - Generator Voltage Out Of Range
    E17 - Shorted Crank Signal Circuit
    E18 - Open Crank Signal Circut
    E19 - Shorted Fuel Pump Feedback Signal
    E20 - Open Fuel Pump Circut Feedback Signal
    E21 - Shorted TPS Signal
    E22 - Open TPS Signal
    E23 - EST Signal Problem
    E24 - VSS Signal Problem
    E25 - EST Circut Problem in Bypass Mode
    E26 - Shorted Throttle Switch Signal
    E27 - Open Throttle Switch Signal
    E28 - Open Third Or Fourth Gear Circut
    E29 - Shorted Fourth Gear Circut
    E30 - ISC RPM Out Of Range
    E31 - Shorted MAP Sensor Signal
    E32 - Open MAP Sensor Signal
    E33 - MAP/BARO Sensor Correlation
    E34 - MAP Sensor Signal Out Of Range
    E35 - Shorted BARO Sensor Circut
    E36 - Open BARO Sensor Circut
    E37 - Shorted MAT Sensor Signal
    E38 - Open MAT Sensor Signal
    E39 - VCC Engagement Problem
    E40 - Open Power Steering Pressure Switch Signal
    E41 - Cam Sensor Signal Problem
    E42 - EST Circut Open
    E43 - ESC Circut Problem
    E44 - Oxygen Sensor Signal Lean
    E45 - Oxygen Sensor Signal Rich
    E46 - Right to left bank fueling difference (Thanks HUF!)
    E47 - BCM-PCM Data Problem
    E48 - EGR System Problem
    E49 - A.I.R. Control Problem
    E51 - ECM PROM Error
    E52 - PCM Memory Reset (See Note)
    E53 - Distributor Signal Interrupt
    E55 - Closed Throttle Angle Out Of Range
    E58 - PASS-Key Control Problem
    E59 - VCC Temperature Sensor Circut Problem
    E60 - Cruise- Transaxle Not In Drive
    E61 - Cruise Vent Solenoid Problem
    E62 - Cruise Vacuum Solenoid Problem
    E63 - Cruise Set vs. Vehicle Speed Too High
    E64 - Cruise- Vehicle Acceleration Too High
    E65 - Cruise Servo Position Sensor Signal Problem
    E66 - Cruise- Engine RPM Too High
    E67 - Cruise Set/Coast or Resume/Accel Switch Shorted
    E68 - Cruise Command Problem
    E70 - Intermittent TPS Signal
    E71 - Intermittent MAP Sensor Signal
    E73 - Intermittent Coolant Temp. Sensor Signal
    E74 - Intermittent MAT Sensor Signal
    E75 - Intermittent VSS Sensor Signal
    E80 - Fuel System Rich
    E85 - Idle Throttle Angle Too High
    E90 - VCC Brake Switch Signal Problem
    E91 - PRNDL Switch Problem
    E92 - Heated Windshield Request Problem
    E96 - Torque Convertor Overstress
    E97 - P/N to D/R at High Throttle Angle
    E98 - High RPM P/N to D/R in ISC Range
    E99 - Cruise Servo Apply Problem

    BCM Codes*************

    F10 - Outside Air Temperature Sensor Circuit
    F11 - A/C High Side Temperature Sensor Circuit
    F12 - A/C Low Side Temperature Sensor Circuit
    F13 - In-Car Temperature Sensor Circuit
    F14 - Diesel Coolant Sensor Circut
    F15 - Solar Sensor Circuit Failure
    F19 - Blower Motor Failure
    F30 - Display Panels to BCM Data Problem
    F31 - Display Panels to BCM Data Problem
    F32 - BCM-ECM Data Problem
    F40 - Air Mix Door Problem
    F41 - Cooling Fans Problem
    F46 - Low Refrigerant Charge
    F47 - Low Refrigerant Charge
    F48 - Refrigerant System Problem
    F49 - High Temperature Clutch Disengage
    F50 - Coolant Temp. too High
    F51 - BCM PROM Error Indicator

    Additional Eldorado/Seville BCM codes:

    B110 - Outside Temperature Sensor Circuit
    B111 - A/C High Side Temperature Sensor Circuit
    B112 - A/C Low Side Temperature Sensor Circuit
    B113 - In Car Temperature Sensor Circuit
    B115 - Sunload Sensor Circuit
    B119 - Twilight Photocell Circuit
    B120 - Twilight Delay Pot Circuit
    B120 / B122 - Twilight Delay & Panel Dimming
    B121 - Twilight Enable Switch Circuit
    B122 - Panel Dimming Switch Pot Circuit
    B123 - Courtesy Lamps Panel Switch Circuit
    B333 - Loss of SIR Data
    B334 - Loss of ECM Serial Data
    B335 - Loss of CCDIC Data
    B336 - Loss of IPC Serial Data
    B337 - Loss of HVAC Programmer Data
    B339 - Ride Control Serial Communication Failure (Thanks hcaddy95!)
    B409 - Charging System Failure (Thanks hcaddy95!)
    B410 - Charging System Circuit
    B411 or B412 - Battery Voltage Too High or Too Low
    B420 - Relay Circuits
    B421 - BCM Output Driver Failure (2) (Thanks hcaddy95!)
    B440 - Air Mix Valve (Door) Circuit Problem
    B441 - Cooling Fans Problem (Thanks hcaddy95!)
    B446 / B447 - Low Refrigerant Pressure
    B448 - Low Refrigerant Pressure
    B449 - High Side Temperature Too High
    B450 - Coolant Temperature Too High
    B480 - Loss of ABS/TCS Communication (ABS System) (Thanks hcaddy95!)
    B481.. ABS (fault) (Thanks hcaddy95!)
    B483.. ABS/TCS Disabled (Thanks hcaddy95!)
    B552 - Keep Alive Memory Error
    B556 - Odometer (EE) PROM Error
    L110 - LSP Communication Faliure (Allante) (Thanks hcaddy95!)
    L441 - Lighting System Low Voltage Warning (Allante) (Thanks hcaddy95!)

    This is more general:

    Googled "OBD1 codes":

    http://www.gmtuners.com/OBD1_DTC.htm

    GM OBD-1 Diagnostic Trouble Codes

    For 1995-previous model year EFI-equipped GM vehicles. NOTE: Some codes not supported on all models, consult your specific vehicle's service manual for the correct trouble code list and description for your application.

    DTC - 12 No distributor reference pulse (diagnostic test active)

    DTC - 13 Oxygen sensor circuit open or no activity

    DTC - 13 Left bank O2 sensor circuit open or no activity

    DTC - 14 Engine coolant temp sensor error (high temp indicated)

    DTC - 15 Engine coolant temp sensor error (low temp indicated)

    DTC - 16 System voltage too low

    DTC - 17 Camshaft position sensor error

    DTC - 21 Throttle Position sensor error (signal high)

    DTC - 22 Throttle position sensor error (signal low)

    DTC - 23 Intake air temp sensor error (low temp indicated)

    DTC - 24 Vehicle speed sensor error (open circuit or no activity)

    DTC - 25 Intake air temp sensor error (high temp indicated)

    DTC - 26 Quad Driver Module (QDM A) error

    DTC - 28 Auto transmission range pressure switch error

    DTC - 31 Wastegate solenoid circuit error

    DTC - 31 Gear Position Switch (PRNDL) error

    DTC - 32 EGR system failure

    DTC - 33 MAP sensor circuit error (signal high indicating low vacuum)

    DTC - 34 MAP sensor circuit error (signal low indicating high vacuum)

    DTC - 35 IAC problem or idle error

    DTC - 36 MAF sensor error

    DTC - 36 24x Crankshaft position sensor circuit error

    DTC - 36 4T60-E Shifting Error

    DTC - 37 TCC brake switch circuit error

    DTC - 38 TCC brake switch circuit error

    DTC - 39 Clutch switch circuit error

    DTC - 39 TCC error

    DTC - 41 Ignition control error

    DTC - 41 MEM-CAL error

    DTC - 41 C³I Cam Sensor Signal error

    DTC - 42 Ignition bypass circuit error

    DTC - 43 Knock sensor error

    DTC - 44 Oxygen sensor error (lean condition indicated)

    DTC - 44 Left bank O2 sensor error (lean condition indicated)

    DTC - 45 Oxygen sensor error (rich condition indicated)

    DTC - 45 Left bank O2 sensor error (rich condition indicated)

    DTC - 46 Pass-Key II (VATS) system error - circuit out of freq range

    DTC - 47 UART (serial data) circuit error

    DTC - 51 PROM error

    DTC - 51 Incorrect MEM-CAL

    DTC - 52 Fuel cal-pak incorrect or missing

    DTC - 53 System voltage too high

    DTC - 53 Digital EGR Valve solenoid 1 error

    DTC - 54 Fuel pump circuit low voltage

    DTC - 54 Digital EGR Valve solenoid 2 error

    DTC - 55 ECM error

    DTC - 55 Digital EGR Valve solenoid 3 error

    DTC - 56 Quad Driver Module (QDM B) error

    DTC - 57 Boost Control error

    DTC - 58 Trans fluid temp sensor circuit error (low voltage)

    DTC - 58 VATS system error

    DTC - 59 Trans fluid temp sensor circuit error (high voltage)

    DTC - 61 A/C system performance

    DTC - 63 Right bank O2 sensor circuit error

    DTC - 63 MAP sensor circuit signal voltage high (low vacuum indicated)

    DTC - 64 Right bank O2 sensor lean exhaust indicated

    DTC - 64 MAP sensor circuit signal voltage low (high vacuum indicated)

    DTC - 65 Right bank O2 sensor rich exhaust indicated

    DTC - 66 A/C pressure sensor circuit error (low pressure indicated)

    DTC - 67 A/C pressure sensor circuit error

    DTC - 68 A/C clutch relay circuit error (shorted to ground)

    DTC - 69 A/C clutch relay circuit error (open circuit indicated)

    DTC - 69 A/C high pressure switch error

    DTC - 70 A/C pressure sensor circuit error (high pressure indicated)

    DTC - 71 A/C evaporator temp sensor circuit error (low temp indicated)

    DTC - 72 VSS signal circuit error

    DTC - 73 A/C evaporator temp sensor circuit error (high temp indicated)

    DTC - 75 Digital EGR solenoid #1 circuit error

    DTC - 76 Digital EGR solenoid #2 circuit error

    DTC - 77 Digital EGR solenoid #3 circuit error

    DTC - 79 Transmission fluid overtemp

    DTC - 80 Transmission component slipping

    DTC - 82 3x Crankshaft position sensor circuit error

    DTC - 85 PROM error

    DTC - 86 A/D error

    DTC - 87 EEPROM error (flash memory error)

    DTC - 90 TCC error

    DTC - 93 Transmission pressure control solenoid circuit error

    DTC - 96 Transmission system voltage low

    DTC - 98 Invalid PCM program

    DTC - 99 Invalid PCM program

  9. #24
    silent1jt's Avatar
    silent1jt is offline Cadillac Owners Member
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    Thank you for the information. Excuse my ignorance but how can i tell if its an ECM or BCM code?

  10. #25
    jayoldschool's Avatar
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    Re: OBDI Code Reference Thread

    You don't have a BCM

  11. #26
    silent1jt's Avatar
    silent1jt is offline Cadillac Owners Member
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    okay, thanks alot. Now to figure out how to fix the codes i have. The coolant code i think its because of the fail safe thermostat that in it, i need to replace it still. The other 2 i have no clue

  12. #27
    brougham is offline Cadillac Owners Master
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    Re: OBDI Code Reference Thread

    The Haynes manual has a nice list of codes what what can cause them. It's pretty much the only thing it's good for.

    15,30&52 are all in the list on the very first post on page 1.

  13. #28
    jaynad is offline Cadillac Owners Member
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    Re: OBDI Code Reference Thread

    I just picked up a 92 Brougham 305 and was wondering what the Parameters "-02" and "-11" are and do.

    This page seems to imply that you can make changes to them (well, the "-11" parameter anyway):
    http://www.troublecodes.net/cadillac/cadbrom/
    From that page: (step 7, top section)
    "To over-ride a program number, while in program number display, parameter -11, pressing "WARMER" or "COLDER" will increase or decrease the program number."

    The "-02" parameter is described as "Program number" with range 0-255 and units as "Counts" Reads as "63"
    The "-11" is described as "Program number" with range 0-100 and units "%" Reads as "24"

    Just wondering if anyone knows what these are for. I'm not gonna adjust anything without knowing what it's supposed to do.

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