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Help with codes

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Old Aug 17th, 2019, 20:07   #1
Georgeandkira
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Location: Hackensack
Default Help with codes

Hello,
While we're on our 3rd V70 (many know me here) I pulled codes from another Volvo which isn't a V70. The codes should be recognizable.
I need help with a few of them.

Today I looked at a 2004 XC-90 for sale at a local gas station. It drove quite well though it had no discernible turbo boost.
It shifted well, had clean oil on the dipstick though a few chunks of build-up on the filler cap and oil fill grille.
The AC worked just fine too.
I pulled 17 codes with my BSR-PPC reader.
There was no Check Engine Light
The CEL did light up appropriately with the start-up circuit.

I used CAPS after each code and definition for clarity.

1) ECM 2A2A - Rear HO2S bank #1 heating. I WILL CHANGE THE REAR O2 SENSOR
2) CEM 1A66 - Communication with ICM. NO IDEA WHAT ICM MEANS
3) CEM 5B01 - LH heating element. HEATING ELEMENT OF WHAT?
4) CEM 6C48 - Transponder type. WHICH TRANSPONDER?
5) CEM 6C49 - Steering Column Lock Module. KEY WORKED OK. THE DISABLER RING (see above)
6) CEM 8F2D - Windshield Wipers / wiper. WIPERS AND WASHERS WORKED OK
7) CEM 8F2E - Windshield Wipers / wiper. as above
8) ECM 4801 - TWC efficiency bank 1. WHAT IS TWC?
9) DDM 0025 - BUT 0035 REFERRED TO THE PASSENGER WINDOW
10) PDM 0025 - as above
11) UEM 0035 - reading lamp
12) UEM 0037 - reading lamp
13) UEM 0039 - General Courtesy lighting
14) UEM 0080 - Rain Sensor
15) PCM 002A - NO PCM CODES LISTED
16) PCM 002B - as above
17) PCM 0023 - as above

Any help with any of these will be much appreciated.
1) I'm sure the heating element of the sensor went bad so it's self explanitory
2) as stated, what's an ICM and where should I look?
3) LH (left hand?) heating element?
4 + 5) The anti-theft transponder pick-up ring?
6 + 7) Any clue here as the wipers and washers work.
8) TWC efficiency? no clue
9 + 10) Another odd Volvo window positioning code?
11 - 14) I can live with these. I'll check the bulbs and throw water on the windshield
15 - 17) There were no PCM definition nor heading let alone codes listed.

Any help at all with these puzzlers. thanks George (and Kira)
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Old Aug 21st, 2019, 17:42   #2
100K+
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Join Date: Aug 2008
Location: Newcastle
Default

Quote:
Originally Posted by Georgeandkira View Post
1) ECM 2A2A - Rear HO2S bank #1 heating. I WILL CHANGE THE REAR O2 SENSOR
2) CEM 1A66 - Communication with ICM. NO IDEA WHAT ICM MEANS
3) CEM 5B01 - LH heating element. HEATING ELEMENT OF WHAT?
4) CEM 6C48 - Transponder type. WHICH TRANSPONDER?
5) CEM 6C49 - Steering Column Lock Module. KEY WORKED OK. THE DISABLER RING (see above)
6) CEM 8F2D - Windshield Wipers / wiper. WIPERS AND WASHERS WORKED OK
7) CEM 8F2E - Windshield Wipers / wiper. as above
8) ECM 4801 - TWC efficiency bank 1. WHAT IS TWC?
9) DDM 0025 - BUT 0035 REFERRED TO THE PASSENGER WINDOW
10) PDM 0025 - as above
11) UEM 0035 - reading lamp
12) UEM 0037 - reading lamp
13) UEM 0039 - General Courtesy lighting
14) UEM 0080 - Rain Sensor
15) PCM 002A - NO PCM CODES LISTED
16) PCM 002B - as above
17) PCM 0023 - as above
ECM 2A2A - Rear O2 sensor - faulty signal

ECM 4801 - three way cat convertor efficiency Bank 1 - intermitant fault
ECM 4801 - three way cat convertor efficiency Bank 1 - permanent fault

Will check CEM codes when lappy feels better.

Cheers
Bob
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Old Aug 21st, 2019, 18:48   #3
100K+
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Last Online: Sep 10th, 2019 11:56
Join Date: Aug 2008
Location: Newcastle
Default

Quote:
Originally Posted by Georgeandkira View Post
1) ECM 2A2A - Rear HO2S bank #1 heating. I WILL CHANGE THE REAR O2 SENSOR
2) CEM 1A66 - Communication with ICM. NO IDEA WHAT ICM MEANS
3) CEM 5B01 - LH heating element. HEATING ELEMENT OF WHAT?
4) CEM 6C48 - Transponder type. WHICH TRANSPONDER?
5) CEM 6C49 - Steering Column Lock Module. KEY WORKED OK. THE DISABLER RING (see above)
6) CEM 8F2D - Windshield Wipers / wiper. WIPERS AND WASHERS WORKED OK
7) CEM 8F2E - Windshield Wipers / wiper. as above
8) ECM 4801 - TWC efficiency bank 1. WHAT IS TWC?
9) DDM 0025 - BUT 0035 REFERRED TO THE PASSENGER WINDOW
10) PDM 0025 - as above
11) UEM 0035 - reading lamp
12) UEM 0037 - reading lamp
13) UEM 0039 - General Courtesy lighting
14) UEM 0080 - Rain Sensor
15) PCM 002A - NO PCM CODES LISTED
16) PCM 002B - as above
17) PCM 0023 - as above

.

Any help at all with these puzzlers. thanks George (and Kira)
2) CEM1A66 - bad comms with Infotainment Control Module.
4) CEM6c48 - Steering column transponder get correct signal,( I assume from key?) but "something else is wrong" during startup.

Got nothing else..

Cheers
Bob
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Old Aug 27th, 2019, 23:22   #4
Georgeandkira
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Location: Hackensack
Default Change of "Plan"

It's 10 days after my original post.
Repeated attempts at contacting the owner of the XC-90 have gone unanswered.
While taking a Sunday evening stroll I spotted a "cherry" 2005 Ford Ranger XF4 Extended Cab. Capacity was one reason I was interested in the XC-90 but a pickup has always been on my radar. I am a Yank, after all.

Original owner, low miles (<48K), new tires, solid maintenance at an esteemed garage.....I could go on.

It's 46 hours later and it's mine now.

Let the mystery woman who's out of the country keep her damn XC-90.
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Old Aug 28th, 2019, 22:40   #5
wynnj
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Location: Sandhurst
Default

After reading the codes did you clear them and then restart the engine? I've found various codes stored before now which don't bear any relation to any 'real' events I've noticed other than when I've had a low battery voltage. After clearing them they haven't recurred.
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Old Aug 29th, 2019, 09:22   #6
Georgeandkira
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Default

That is the one thing I truly want to do.
Should the XC-90 be there Saturday evening or Sunday, I'll recheck the codes.
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