New to Cadillac and have 12 codes in less than 24 hours. Please help!!!
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Cadillac Catera and Cimarron Forum Discussion, New to Cadillac and have 12 codes in less than 24 hours. Please help!!! in Past Cadillac Vehicle Discussion; Hello forum. I have owned many hondas and done lots of repairs on my vehicles and many friends vehicles. I ...
  1. #1
    Kildar is offline Cadillac Owners Member
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    New to Cadillac and have 12 codes in less than 24 hours. Please help!!!

    Hello forum. I have owned many hondas and done lots of repairs on my vehicles and many friends vehicles. I have owned a few GM vehicles as well, including Saturn SL, Pontiac Grand Am, GMC Sierra, and the old Chevy Celebrity. However, other than my Sierra all of them are front wheel drive and I wanted a fun rear wheel drive that can still be nice enough for my wife not to hate having another vehicle.

    I went to an auto auction and bought what looks like a flawless Catera with an engine light on for $1K. Thought i got a steal with only 81K miles on the odometer. Driving home i found out that the brakes are severely warped, there is an oil leak dripping on the exhaust, and the ABS, and tire pressure lights all came on too. I checked the oil and it is a transparent amber, indicating a recent oil change. the radiator was filled with water, and there is a ton of oil around the valve cover. I also noticed on the drive home, the Speedometer would intermittently fail. So I pulled out the trust Snap-on Solus-Pro scanner, to find out the reason for the lights. I received the following codes in both current and history standing,

    ENGINE:
    U-2108 communication loss to ABS
    P-0115 Engine Coolant Temperature Circuit Malfunction
    P-1141 HO2S bank 1 sensor 2 average voltage level
    P-1161 HO2S Heater Power Stage Circuit Bank 2 Sensor 2
    P-1700 Transmission MIL request
    P-0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
    P-0155 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1)
    P-0141 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2)
    P-0161 O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2)
    P-0140 O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2)

    Transmission codes:
    U-2108 communication loss to ABS
    U-2108 communication loss to ABS (It was there twice)
    P-1792 transmission control module Reprogramable memory

    ABS:
    C-0244 EBCM control circuit.

    These code seem scary, but as i am reading many posts here, it seems 1 problem causes a lot of random codes to simultaneously occur. Does anyone have a suggestion of what i should inspect or look for that could cause problems with all 4 o2 sensors? I am hoping i don't have to buy all 4 new. And if i do then i really hope the same codes don't recur. the next concern is the transmission issues, as i noticed random times when there was little or no acceleration on the freeway, as if the trans was slipping. However this seemed intermittent along with the failures of the speedometer.

    The sunroof also is not working, but i have not done a thorough inspection of the vehicles fuses and relays. I will be busy tomorrow morning going through all the visuals and replacing the brakes and valve cover gaskets. Then i will be searching for the RPM matching whirring coming from either the belts or the secondary intake. thanks a lot for reading this and any usefull advice you can share.

    I apologize in advance if there are several threads on this that i have not found yet. Thank you ~Kildar

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  3. #2
    investor74 is offline Cadillac Owners Enthusiast
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    Re: New to Cadillac and have 12 codes in less than 24 hours. Please help!!!

    With so many seemingly unrelated codes, I would start by checking the voltage in the car. I like to see at least 13.5 volts on the dash meter. I know that the transmission is hyper sensitive to having enough voltage, otherwise it does not work properly. Low voltage could be caused by a weak alternator, bad battery or bad battery cable.

  4. #3
    kaustein is offline Cadillac Owners Enthusiast
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    Re: New to Cadillac and have 12 codes in less than 24 hours. Please help!!!

    Personally I'd sell it and cut your losses. Read the post here. Not an easy car to own.

  5. #4
    Kildar is offline Cadillac Owners Member
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    Re: New to Cadillac and have 12 codes in less than 24 hours. Please help!!!

    investor74~

    Thank you for the help. I tested the voltage using a multimeter and received a reading of 14.0 volts. the vehicle was off with key in the off position and had been sitting for 18 hours. The reading seemed too high so i placed the key in the ignition at "on II" position with the engine off. I tested the voltage again, and received a reading of 12.4v, so i started it and found a reading of 14.4v. The battery has a purchased dat sticker on it indicating it was new 07/12. I tested the voltage at the battery terminal posts. This makes me think that the voltage supply is not the issue. i will be testing all the grounds tomorrow.

    kaustein~

    Thank you for your suggestion and it is well noted. A few posts on this forum have lead me to believe you have some distain for some design flaws with this vehicle. I have not found the thread others where mentioning where you outlined your thoughts. After finding several problems with this car today, i was left puzzled how the engineering and parts choices for the interior and body could have been so successful, yet the power train seems aged beyond its miles. Either i bought a car from a kid that road this car hard, or its a bad design. Im not sure im ready to through in the towel though. I live in CA so smog laws prevent me from selling the vehicle to anyone other than a dismantler, unless all the smog issues are fixed. The dismantlers will only pay 300 for it as is.

    UPDATE:

    while testing battery voltage i noticed a whirring noise coming from the secondary water pump. Every time i barely touched the pump, it would speed up or nearly stall. I think there are some bad brushes in the motor. Yesterday the car overheated when i drove it down the street (15 miles and 20-30 minutes round trip.) On the way back the engine overheated quickly. Do you think the secondary water pump could cause that?

    Also i was going to do a coolant flush but i found whit chunks floating in the water. The reserve had only water in it, but the walls of the reservoir are coated in a thick sludge of a light whitish tan color. This seems consistent with a blown head gasket. the vehicle still starts easily and there is no smoke coming from the tail pipe. .... So i don't know if this is old residue or new. however the oil leak leads me to believe it is a new issue.

    As long as i am doing a complete head gasket set, i will also be doing the timing belt too. Does anyone have any suggestions for finding the parts less expensive. Autozone want 209 for the gasket set, usually i pay 110 + or - for gasket sets.
    I also need all new motor mounts and the timing belt / tensioner/ water pump (Primary). It will be a busy couple days. I still have to do the valve job on my pontiac grand am too.

  6. #5
    Kildar is offline Cadillac Owners Member
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    Re: New to Cadillac and have 12 codes in less than 24 hours. Please help!!!

    Well, I tryed doing a pressure test on the cooling system. There did not seem do be any pressyre loss, so i heated the engine to running temp with the pressure still applied. again no coolant pressure loss. I am wondering if the oil is left over from a repair done before. Has anyone been able to get all the oil cream out of the coolant system?

    If so, how? Im rempted to dump a bott;e of dawn dish soap in there.

  7. #6
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
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    I would suggest a block test as a definitive answer to the HG question. In the meantime, is it possible the residue in the surge tank is from a stop leak product?

  8. #7
    Kildar is offline Cadillac Owners Member
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    Re: New to Cadillac and have 12 codes in less than 24 hours. Please help!!!

    Possible but unlikely. I needed a car better on gas then my truck, and i am selling my truck to help pay for a surgery for my mom, so bought this at auction for 1000 plus 350 in auction fees. Now i am out the truck, and i still am afraid to drive this thing. Im glad work is close, but i need a car again.

    How does a block test work? Is that a leak-down test? Where you pressurize the cylinder at top dead center to see how much pressure leaks? Or is there a different one you are referring to?

  9. #8
    Jaeger63 is offline Cadillac Owners Member
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    Re: New to Cadillac and have 12 codes in less than 24 hours. Please help!!!

    STOP!!!!

    You're talking about doing a head gasket and timing belt when the symptoms point to neither of those things. First, replacing a head gasket on these is nothing like doing it on your old truck. Do you have all of the torx and triple square bits required, not to mention the timing tools to ensure you can do the procedure without bending valves? Do you know how many bolts are single use torque-to-yield bolts and will need to be replaced? Do you have the tools and manuals required to properly install all of those things? No? Don't start.

    But more importantly, Cadillac parts are too expensive to start replacing things you aren't sure will address the problems. Your codes point to sensor and ebtcm issues. It's possible you could replace the entire engine and transmission and still have the same codes showing.

    ----------

    As for the oil in the reservoir, the most likely source for that is the oil cooler, not the head gasket. That's not a particularly expensive fix, but it's enough work that you don't want to tackle it if it's not needed. Flush and clean the cooling system with a degreaser and see if the oil re-appears.

    I don't think these cars are nearly as bad as kaustein says. When properly serviced they had a pretty good reputation as part of Britain's fleet of police cars. But if your current circumstances require a cheap, dependable fuel-efficient car no Cadillac is really any of those things.

  10. #9
    MoistCabbage's Avatar
    MoistCabbage is online now Cadillac Owners 10000+ Posts
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    Quote Originally Posted by Kildar
    How does a block test work? Is that a leak-down test? Where you pressurize the cylinder at top dead center to see how much pressure leaks? Or is there a different one you are referring to?
    A block test is a chemical test that indicates if there are traces of combustion gasses in the cooling system. Basically, you fill a chamber with the test fluid, and draw air into the chamber from the surge tank. There are videos of the test procedure on YouTube.

  11. #10
    Kildar is offline Cadillac Owners Member
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    Re: New to Cadillac and have 12 codes in less than 24 hours. Please help!!!

    Quote Originally Posted by Jaeger63 View Post
    STOP!!!!

    You're talking about doing a head gasket and timing belt when the symptoms point to neither of those things. First, replacing a head gasket on these is nothing like doing it on your old truck. Do you have all of the torx and triple square bits required, not to mention the timing tools to ensure you can do the procedure without bending valves? Do you know how many bolts are single use torque-to-yield bolts and will need to be replaced? Do you have the tools and manuals required to properly install all of those things? No? Don't start.

    But more importantly, Cadillac parts are too expensive to start replacing things you aren't sure will address the problems. Your codes point to sensor and ebtcm issues. It's possible you could replace the entire engine and transmission and still have the same codes showing.

    ----------

    As for the oil in the reservoir, the most likely source for that is the oil cooler, not the head gasket. That's not a particularly expensive fix, but it's enough work that you don't want to tackle it if it's not needed. Flush and clean the cooling system with a degreaser and see if the oil re-appears.

    I don't think these cars are nearly as bad as kaustein says. When properly serviced they had a pretty good reputation as part of Britain's fleet of police cars. But if your current circumstances require a cheap, dependable fuel-efficient car no Cadillac is really any of those things.
    I am a class B Automotive repair specialist with 3 ASE certifications and 4 years professional experience. I have all the technical tools with the exception of the timing belt cam and crank positioning tools. My Snap-on rep is capable of getting me one next wednesday. I don't want to do more repairs then i need to so i was hoping i would find technical advice here instead of tracking down a dealers manual. I may Just resubscribe to Motor ALL Data to get this one going. Thank you for the advice.

    My concern is with the oil residue, and the overheating. I have realized there are multiple differences from Cadillac, to BMW, and the rest of my GM vehicles. This is the first time i have ever seen an oil coolant mix with out a head gasket issue. Now i understand the oil reservoir issue. How can I test the oil reservoir for current leaks? The dealership wants $370 for a new oil tank. My shop supply sources don't have it available. Seems pricey to be guessing that it is the problem. I have to replace the valve covers anyway, but before tearing into it, i am trying to find how best to test the systems. This way i know what parts to order.

    ----------

    Thanks for the idea MoistCabbage.

  12. #11
    Jaeger63 is offline Cadillac Owners Member
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    Re: New to Cadillac and have 12 codes in less than 24 hours. Please help!!!

    If the oil in the coolant problem persists check out the guide for Omegas here:
    http://www.omegaowners.com/forum/ind...?topic=90596.0

    And if the block test indicates a head gasket failure:
    http://www.omegaowners.com/forum/ind...?topic=90560.0

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