Help! What do all these trouble codes mean?
 

My car flooded (my fault) and it was towed in to the dealer (Oaktree Mazda on Stevens Creek in San Jose). They found a bunch of fault codes, but didn't explain them. I looked around both here and on the web for a list of codes and couldn't find it. Can anyone help?

The codes:

C2778
U1900
U0073 (EPS)
U1900 (EPS)
U1900 (IC)
U2516 (IC)
U1900 RKE
P2101 PCM
U0073 PCM
U0155 PCM
U2516 SASM


Thanks for any help you can give!

DTC No. Condition MIL DC Monitor item* Memory function Page
P0030 Front HO2S heater control circuit problem ON 2 HO2S heater ´
(See DTC P0030 )
P0031 Front HO2S heater control circuit low ON 2 HO2S heater ´
(See DTC P0031 )
P0032 Front HO2S heater control circuit high ON 2 HO2S heater ´
(See DTC P0032 )
P0037 Rear HO2S heater control circuit low ON 2 HO2S heater ´
(See DTC P0037 )
P0038 Rear HO2S heater control circuit high ON 2 HO2S heater ´
(See DTC P0038 )
P0076 VDI solenoid valve control circuit low OFF 2 CCM ´ (See
DTC P0076 )
P0077 VDI solenoid valve control circuit high OFF 2 CCM ´ (See
DTC P0077 )
P0101 MAF sensor circuit range/performance problem ON 2 CCM ´
(See DTC P0101 )
P0102 MAF sensor circuit low input ON 1 CCM ´ (See DTC P0102 )
P0103 MAF sensor circuit high input ON 1 CCM ´ (See DTC P0103 )
P0107 BARO sensor circuit low input ON 1 CCM ´ (See DTC P0107 )
P0108 BARO sensor circuit high input ON 1 CCM ´ (See DTC P0108 )
P0111 IAT sensor circuit range/performance problem ON 2 CCM ´
(See DTC P0111 )
P0112 IAT sensor circuit low input ON 1 CCM ´ (See DTC P0112 )
P0113 IAT sensor circuit high input ON 1 CCM ´ (See DTC P0113 )
P0117 ECT sensor circuit low input ON 1 CCM ´ (See DTC P0117 )
P0118 ECT sensor circuit high input ON 1 CCM ´ (See DTC P0118 )
P0122 TP sensor No.1 circuit low input ON 1 CCM ´ (See DTC P0122
)
P0123 TP sensor No.1 circuit high input ON 1 CCM ´ (See DTC
P0123 )
P0125 Insufficient coolant temperature for closed loop fuel control ON
2 CCM ´ (See DTC P0125 )
P0126 Insufficient coolant temperature for stable operation ON 2
Thermostat ´ (See DTC P0126, P0128 )
P0128 Coolant thermostat problem ON 2 Thermostat ´
P0130 Front HO2S circuit problem ON 2 HO2S ´ (See DTC P0130 )
P0131 Front HO2S circuit low voltage ON 2 HO2S ´ (See DTC P0131
)
P0132 Front HO2S circuit high voltage ON 2 HO2S ´ (See DTC P0132
)
P0133 Front HO2S circuit slow response ON 2 HO2S ´ (See DTC
P0133 )
P0138 Rear HO2S circuit high voltage ON 2 HO2S ´ (See DTC P0138
)
P0139 Rear HO2S circuit slow response ON 2 HO2S ´ (See DTC P0139
)
P0171 System too lean ON 2 Fuel system ´ (See DTC P0171 )
P0172 System too rich ON 2 Fuel system ´ (See DTC P0172 )
P0222 TP sensor No.2 circuit low input ON 1 CCM ´ (See DTC P0222
)
P0223 TP sensor No.2 circuit high input ON 1 CCM ´ (See DTC
P0223 )
P0300 Random misfire detected Flash/ON 1 or 2 Misfire ´ (See DTC
P0300 )
P0301 Front rotor misfire detected Flash/ON 1 or 2 Misfire ´
(See DTC P0301, P0302 )
P0302 Rear rotor misfire detected Flash/ON 1 or 2 Misfire ´
P0327 KS circuit low input ON 1 CCM ´ (See DTC P0327 )
P0328 KS circuit high input ON 1 CCM ´ (See DTC P0328 )
P0335 Eccentric shaft position sensor circuit problem ON 1 CCM ´
(See DTC P0335 )
P0336 Eccentric shaft position sensor circuit range/performance problem
ON 1 CCM ´ (See DTC P0336 )
P0410 AIR system problem ON 2 AIR system ´ (See DTC P0410 )
P0420 Catalyst system efficiency below threshold ON 2 Catalyst ´
(See DTC P0420 )
P0441 EVAP system incorrect purge flow ON 2 EVAP system ´ (See
DTC P0441 )
P0442 EVAP system leak detected (small leak) ON 2 EVAP system ´
(See DTC P0442 )
P0443 Purge solenoid valve circuit problem ON 2 CCM ´ (See DTC
P0443 )
P0446 EVAP system vent control circuit problem ON 2 EVAP system ´
(See DTC P0446 )
P0455 EVAP system leak detected (large leak) ON 2 EVAP system ´
(See DTC P0455 )
P0456 EVAP system leak detected (very small leak) ON 2 EVAP system
´ (See DTC P0456 )
P0461 Fuel gauge sender unit circuit range/performance problem ON 2
CCM ´ (See DTC P0461 )
P0462 Fuel gauge sender unit circuit low input ON 2 CCM ´ (See
DTC P0462 )
P0463 Fuel gauge sender unit circuit high input ON 2 CCM ´ (See
DTC P0463 )
P0480 Cooling fan No.1 control circuit problem OFF 2 Other ´
(See DTC P0480 )
P0481 Cooling fan No.2 control circuit problem OFF 2 Other ´
(See DTC P0481 )
P0500 VSS circuit problem ON 2 CCM ´ (See DTC P0500 )
P0505 Idle air control system problem OFF ¾ ¾ ¾ (See DTC P0505 )
P0506 Idle air control system RPM lower than expected ON 2 CCM ´
(See DTC P0506 )
P0507 Idle air control system RPM higher than expected ON 2 CCM ´
(See DTC P0507 )
P0562 System voltage low (KAM) ON 1 CCM ´ (See DTC P0562 )
P0564 Cruise control switch input circuit problem OFF 1 Other ´
(See DTC P0564 )
P0571 Brake switch input circuit problem OFF 1 Other ´ (See DTC
P0571 )
P0601 PCM memory check sum error ON 1 CCM ´ (See DTC P0601 )
P0602 PCM programming error ON 1 CCM ´ (See DTC P0602 )
P0604 PCM random access memory error ON 1 CCM ´ (See DTC P0604 )
P0610 PCM vehicle options error ON 1 CCM ´ (See DTC P0610 )
P0638 Throttle actuator control circuit range/performance problem ON 1
CCM ´ (See DTC P0638 )
P0661 SSV solenoid valve control circuit low ON 2 CCM ´ (See DTC
P0661 )
P0662 SSV solenoid valve control circuit high ON 2 CCM ´ (See
DTC P0662 )
P0703 Brake switch No.1 input circuit problem ON 2 CCM ´ (See
DTC P0703 )
P0704 Clutch switch input circuit problem ON 2 CCM ´ (See DTC
P0704 )
P0850 Neutral switch input circuit problem ON 2 CCM ´ (See DTC
P0850 )
P1260 Immobilizer system problem OFF 1 Other ¾ (See DTC P1260 )
P1574 TP sensor output incongruent ON 1 CCM ´ (See DTC P1574 )
P1577 APP sensor output incongruent ON 1 CCM ´ (See DTC P1577 )
P1686 Metering oil pump control circuit low flow side problem ON 1
Other ´ (See DTC P1686 )
P1687 Metering oil pump control circuit high flow side problem ON 1
Other ´ (See DTC P1687 )
P1688 Metering oil pump control circuit initial check problem ON 1
Other ´ (See DTC P1688 )
P2004 APV stuck open ON 2 CCM ´ (See DTC P2004 )
P2006 APV motor control circuit IC problem ON 2 CCM ´ (See DTC
P2006 )
P2008 APV motor control circuit/open ON 2 CCM ´ (See DTC P2008 )
P2017 APV position sensor circuit problem ON 2 CCM ´ (See DTC
P2017 )
P2070 SSV stuck open ON 2 CCM ´ (See DTC P2070 )
P2096 Target A/F feedback system too lean ON 2 Fuel system ´
(See DTC P2096 )
P2097 Target A/F feedback system too rich ON 2 Fuel system ´
(See DTC P2097 )
P2101 Drive-by-wire relay control circuit problem ON 1 CCM ´
(See DTC P2101 )
P2106 Throttle actuator control system-forced limited power ON 1 CCM
´ (See DTC P2106 )
P2107 Throttle actuator control module processor error ON 1 CCM ´
(See DTC P2107 )
P2108 Throttle actuator control module performance error ON 1 CCM
´ (See DTC P2108 )
P2109 TP sensor minimum stop range/performance problem ON 1 CCM ´
(See DTC P2109 )
P2112 Throttle actuator control system range/performance problem ON 1
CCM ´ (See DTC P2112 )
P2119 Throttle actuator control throttle body range/performance problem
ON 2 CCM ´ (See DTC P2119 )
P2122 APP sensor No.1 circuit low input ON 1 CCM ´ (See DTC
P2122 )
P2123 APP sensor No.1 circuit high input ON 1 CCM ´ (See DTC
P2123 )
P2127 APP sensor No.2 circuit low input ON 1 CCM ´ (See DTC
P2127 )
P2128 APP sensor No.2 circuit high input ON 1 CCM ´ (See DTC
P2128 )
P2135 TP sensor No.1/No.2 voltage correlation problem ON 1 CCM ´
(See DTC P2135 )
P2136 TP sensor No.1/No.3 voltage correlation problem ON 1 CCM ´
(See DTC P2136 )
P2138 APP sensor No.1/No.2 voltage correlation problem ON 1 CCM ´
(See DTC P2138 )
P2195 Front HO2S signal stuck lean ON 2 HO2S ´ (See DTC P2195 )
P2196 Front HO2S signal stuck rich ON 2 HO2S ´ (See DTC P2196 )
P2257 AIR pump relay control circuit low ON 2 CCM ´ (See DTC
P2257 )
P2258 AIR pump relay control circuit high ON 2 CCM ´ (See DTC
P2258 )
P2259 AIR solenoid valve control circuit low ON 2 CCM ´ (See DTC
P2259 )
P2260 AIR solenoid valve control circuit high ON 2 CCM ´ (See
DTC P2260 )
P2270 Rear HO2S signal stuck lean ON 2 HO2S ´ (See DTC P2270 )
P2271 Rear HO2S signal stuck rich ON 2 HO2S ´ (See DTC P2271 )
P2401 EVAP system leak detection pump control circuit low ON 2 EVAP
system ´ (See DTC P2401 )
P2402 EVAP system leak detection pump control circuit high ON 2 EVAP
system ´ (See DTC P2402 )
P2404 EVAP system leak detection pump sense circuit range/performance
problem ON 2 EVAP system ´ (See DTC P2404 )
P2405 EVAP system leak detection pump sense circuit low ON 2 EVAP
system ´ (See DTC P2405 )
P2406 EVAP system leak detection pump sense circuit high ON 2 EVAP
system ´ (See DTC P2406 )
P2407 EVAP system leak detection pump sense circuit intermittent/erratic
problem ON 2 EVAP system ´ (See DTC P2407 )
P2502 Charging system voltage problem OFF 1 Other ´ (See DTC
P2502 )
P2503 Charging system voltage low OFF 1 Other ´ (See DTC P2503 )
P2504 Charging system voltage high OFF 1 Other ´ (See DTC P2504
)
U0073 CAN system communication error (See DTC TABLE [MULTIPLEX
COMMUNICATION SYSTEM] )
U0101 Communication error to TCM
U0121 Communication error to ABS HU/CM
U0155 Communication error to instrument cluster
U0167 Communication error to keyless control module

I hope you get a nice loaner/rental car

Those trouble codes can all pop up if you have a flat battery. Basically, they are caused by communication failures with modules, because the modules don't have a sufficient power supply.
Don't worry about them.

Whew! At first I thought that this enormous list was just MY codes...

The wrecker guy pissed me off! He INSISTED on leaving the key on and the window open a little all the way to the dealer (20 minutes). I'm sure the battery was low already after all the cranking I did to it. I wonder if I should go ahead and put in one of those Optima batteries.

I got a Mazda 3 base model with 20,000 miles and a weak-ass 4 banger. The front seat looked like someone had pee'd on it... I expected better from Hertz.

Thanks for the help! BTW Where did you get the list of codes?

i think he got it from my thread :)

Hey.. does anyone know what a P0100 means? I have the CANScan tool and the strange thing is that it says I have no pending trouble codes but then it lists P0100 and doesnt have a definition for it...

Anyone? :) THankx! I also have a CEL and fuel smell to go along with it..

life is grand haha

since all of the first few p010x codes are for maf circuit trouble

P0101 MAF sensor circuit range/performance problem ON 2 CCM ´
(See DTC P0101 )
P0102 MAF sensor circuit low input ON 1 CCM ´ (See DTC P0102 )
P0103 MAF sensor circuit high input ON 1 CCM ´ (See DTC P0103 )

it's probably something wrong with your mafs. do you have an aftermarket intake?

in the future you can just do a search for "cel codes" and you will find this thread in the results:

https://www.rx8club.com/showthread.p...ight=cel+codes

Hey.. nah.. I have a stock intake.. I am going to take my car into the dealer tomorrow morning. Hopefully the problem will be fixed this time.

But how can I get an unlisted code? P0100 has to stand for something.

Although there were some changes in the 04/05 model yr CEL table..

P0100 is not listed on either. :confused:

P0100 is listed generically on the internet as an air flow circuit issue. Is your idle very lumpy?

Sometimes the rpm's will drop below 800 for a second and the car will catch itself and quickly bring the rpm's back up. This happens at idle yes... I am going to take my car in today.

One other thing is that I got my 30k service about 1 month ago and 3 weeks later my oil light came on so I added 2 quarts of oil to fill it up. Today, a week or so later, I am back to the half way point. There is no way it should be consuming 2 quarts in a matter of weeks.

noticed any oil dripping? maybe they didnt replace the crush washer? check the airbox for oil there also.

The strange thing is that I havent noticed any oil dripping at all. I'll check the airbox today.

Here is a screen shot of what I am talking about... This is my CANScan unit interface screen.

Can the CANScan determine flash level?

I see you started a new thread ref oil usage?

No, sadly not. The Canscan can not determine flashlevel.

Yeah.. well I didnt start the thread, just revived it from the dead. I am going to take my car into to the dealership this morning.

Well.. I got my car back and the dealer said that because I used an aftermarket CANScan tool I am getting U error codes on the WDS tool. They also didnt find any of the P0100 or P0003 codes that are listed from my CANScan tool.. HUH? Anyone know what a U error code is?

dave you have missing oil and a mafs circuit code. imy bet is the MAFS is fouled by your missing oil. get them to pop off the tube and mafs to have a look and clean it.

https://www.rx8club.com/showpost.php...16&postcount=4

The U-codes pop up when there is a communcation issue between CAN modules..

They told me they were caused because I used an outside tool that wasnt an ODBII approved method for access.. (An aftermarket POS basically)

This is our MAF sensor right?

I dont have the K&N.. just stole the pic. used it rather :)

They tried to tell me I caused these U error codes and thus charged me for work that Mazda doesnt cover..

I tried taking that piece apart and cleaning it a bit. What is the small bulb inside of the unit? It's all black... should it be that color?

Well I looked inside my airbox and took off my maf and it seems ok.. but i'll ask them to clean it... maybe even the throttle body too.

Did the CEL/MIL occur when you had CAN Scan plugged in? If so, and you can reproduce it, you should raise this with Dan Harrison.

It is possible for a scan tool problem to cause the CAN bus errors to be logged. I can do it with my interface on demand for testing purposes - it saves me doing something like yanking the MAF/IAT connector to cause a CEL, but I do something deliberately to interfere with the bus to cause this. It shouldn't happen under normal circumstances.

Are you getting more trouble codes now they have been reset? If not, I'd be putting it all down to the flooding and low battery voltage as you tried to restart. If there is a problem with the MAF, you'll soon get another CEL and you'd really notice the lumpiness.

I don't know how after market scan tools work, but the PCM probably detects them on the network, tries to communicate with them, and can't, resulting in your communication (U) trouble codes. Makes sense to me, but I too think you should consult your tool supplier for details.

I dont think it's an issue with the CANScan because I can reproduce the CEL without it being plugged in. Matter of fact, this is usually the case. When I get home I plug in my CANScan to see what the trouble codes are. Thats how I know it's a P0100.

Hmm.. I'd have the dealer clear the DTC, then reproduce the problem with them there and have them re-read the DTC. This will soon clear up any confusion around CAN Scan causing the problem.

what is the DTC? Something where the trouble codes are stored?

dtc=diagnostic trouble code. its service guy speak.

here

bump*

Whatever happened to this issue dave? I am having the same trouble codes now along with the misfire. This is the second time it has happened to me and the dealership only dealt with the misfire issue (as if they didnt see the P0003 and P0100 codes).

My CELs with these codes happened without using CANscan.