Scbs tpms errors

I have a 2012 Mazda CX-5 that i imported from Japan about 9 months ago. When I started yesterday morning, I got engine check light and errors with SCBS, TPMS and traction control warning light is illuminated. Car is almost undriveable. Seems as though it keeps braking and is very jerky (bucking). Car drove issue free the night before. I however did leave a hood lamp on by mistake and i would sometimes get before an error about power management system and the I-Stop would not work...it would be flashing orange. Don't know if problems are related. I took car to the closest technician. He scanned and picked up several codes: U0001, P061B, P0A8D, U0401 and B11D4. He cleared them and might have reset and car drove fine. Used for a few a hours and parked for around 5 hours. When i restarted the problem reoccurred. Any assistance will be greatly appreciated.

In all likelihood, you're car is due for an ECU reflash by a Mazda dealer. Early models were subject to some software glitches that only the dealer can resolve. Don't try to mess with this yourself.

Had the ECU reflashed by a mazda technician. Car drove fine on test run. Parked it up for a few hours and problem returned.

Read the transmission problem thread, sounds similar to transmission control unit problem...

I'm gonna take a guess that since you live on the small island of Trinidad and you imported the car, there actually isn't a Mazda dealer.

The codes give you clues to what the problem is, clearing them just lets you trip them again.
All of those codes are general PCM (ECU) getting bad signal codes. P0A8D is an istop malfunction. The 15 amp and 40amp fuse are listed as possible culprits, along with the general PCM bad signal problem. P061b is about an error in engine torque calculation, which is limiting your engine speed. u0401 is specifically a bad signal from the driveline/transaxle. B11D4 is regarding a discrepancy between the speed the laser is showing for deceleration vs actual deceleration speed; an error with the laser, or a clogged brake line is the listed possible cause. Of the few users in the above mentioned thread who actually had the resource to pull codes, they were pulling transmission codes, none of which you seem to be pulling. The easiest thing to check in this situation are the harness plugs on the front body control module and the ECU. You can pop the Front BC module loose with a flat head screwdriver and check to see that the (3?) wiring harnesses are not loose in the bottom of it. They plug into it vertical. same thing with the ECU, make sure the harness connectors in it are actually plugged in all the way. Unplug the battery before doing so and clear the code before starting again to see if they come back.

If it is an ECU update, unless you have some place that can get you a mazda hex file (i.e an actual mazda dealer) you would have to go through an engine tuner who could give you via mazda edit/versa tune a newer hex for istop equipped cx-5's. But that only will solve a software issue if it's related to the ECU/PCM.

Also.. for very cheap you can diagnose and clear your own codes, which might be really helpful for you as an importer
http://www.mazdas247.com/forum/show...ig-roadtrip!&p=6466952&viewfull=1#post6466952

There is a mazda dealer but the prices are ridiculous. A model like mine would sell for like US$60000. I imported a used one doing like 70000 kms but the dealers dont allow them in their garage even though you are willing to pay. The guy who came by me to reflash works at Mazda.Thanks for the help. I really appreciate it. Will post updates.

i replaced battery today...same problem...i bought a bluetooth obd2 adapter...any guidance as how to use this tool to diagnose problem is welcomed

Used Forscan......


disconnected
(WARN) [20:36:39.395] Checking Bluetooth (00:1D:A5:00:03:8D)...
(OK) [20:36:46.324] Adapter: ELM327 v1.5
(OK) [20:36:48.097] Connection to vehicle has been established
(OK) [20:36:52.432] Vehicle: Mazda CX-5 PE 2.0L SKYACTIV, VIN: KEE***05224
(OK) [20:36:56.445] Found module: TCM - Transmission Control Module
(WARN) [20:36:57.640] DTCs in TCM: U0442:00-2F
(OK) [20:37:01.682] Found module: PCM - Powertrain Control Module
(WARN) [20:37:02.316] DTCs in PCM: P0102:00-AF, P061B:00-AF
(OK) [20:37:02.405] Found module: OBDII - On Board Diagnostic II
(WARN) [20:37:03.473] DTCs in OBDII: P0102-C
(OK) [20:37:04.378] Found module: ICA - Smart City Brake Support
(WARN) [20:37:05.255] DTCs in ICA: U0401:68-28, U0415:68-28
(OK) [20:37:07.509] Found module: ABS - Anti-Lock Brake / Traction Control Module
(WARN) [20:37:09.001] DTCs in ABS: U0401:00-2B
(OK) [20:37:12.177] Found module: RCM - Restraint Control Module
(OK) [20:37:15.697] Found module: AFS - Adaptive Front Steering
(OK) [20:37:18.694] Found module: SSU - Start Stop Unit
(OK) [20:37:19.649] Found module: EPS - Electronic-Controlled Power Steering
(OK) [20:37:20.748] Found module: F_BCM - Front Body Control Module
(OK) [20:37:21.782] Found module: IC - Instrument Cluster
(WARN) [20:37:22.509] DTCs in IC: U0433:68-48, B11D4:53-48



===TCM DTC U0442:00-2F===
Code: U0442 - Invalid Data Received From ECM/PCM B

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Transmission Control Module

Freeze Frame :
-DTC: --- - DTC That Caused Required Snapshot Data Storage
-LOAD: 26.67 % - Calculated Load Value
-ECT: 58 C - Engine coolant temperature
-RPM: 725 rev/min - Engine Revolutions Per Minute
-VSS: 0.0 km/h - Vehicle Speed
-IAT: 47 C - Intake Air Temperature
-TP: 14.51 % - Throttle Position
-RUNTM: 6 sec - Time Since Engine Start
-VPWR: 12.13 Volt - Control Module Voltage
-APP_D: 15.29 % - Accelerator Pedal Position D
-APP: 0.00 % - Accelerator Pedal Position
-APP: 0.00 % - Accelerator Pedal Position
-SLIP_VALUE: 56 rev/min - Absolute Value of Slip
-HTM_DIS: 0.0 km - The distance travelled since the High Temperature Mode was activated.
-HTM_DIS: 0.0 km - The distance travelled since the High Temperature Mode was activated.
-GEAR_SEL: error - Gear select position
-GEAR_SEL: error - Gear select position
-TSS: 686 rev/min - Turbine Shaft Speed
-TSS: 686 rev/min - Turbine Shaft Speed
-OSS: 0 rev/min - Output Shaft Speed.
-OSS: 0 rev/min - Output Shaft Speed.
-TFT: 53 C - Transmission Fluid Temperature
-TFT: 53 C - Transmission Fluid Temperature
-LOCK_UP: OFF - Toruque Converter Lockup State
-LOCK_UP: OFF - Toruque Converter Lockup State
-OP_SW2: Off - Oil Pressure Switch 2
-OP_SW1: Off - Oil Pressure Switch 1
-OIL_PRES_SW1: Off - Oil Pressure Switch 1
-OIL_PRES_SW2: Off - Oil Pressure Switch 2
-SS_ON_OFF: On - ON/OFF solenoid
-SS_ON-OFF: On - ON/OFF solenoid
-EOP: Off - Electric Oil Pump
-TORQUE_DES: 270.0 Nm - Desired Engine Torque
-G_INHIBIT_4: Off - Gear Inhibit - 4th Gear
-G_INHIBIT_3: Off - Gear Inhibit - 3rd Gear
-G_INHIBIT_2: Off - Gear Inhibit - 2nd Gear
-G_INHIBIT_1: Off - Gear Inhibit - 1st Gear
-G_INHIBIT_5: Off - Gear Inhibit - 5th Gear
-G_INHIBIT_6: Off - Gear Inhibit - 6th Gear
-G_INHIBIT_N: Off - Gear Inhibit - Neutral Range
-G_INHIBIT_R: Off - Gear Inhibit - Reverse Range
-EOP_RLY: Off - Electric Oil Pump Relay
-OP_SW4: Off - Oil Pressure Switch 4
-OP_SW3: Off - Oil Pressure Switch 3
-OIL_PRES_SW3: Off - Oil Pressure Switch 3
-OIL_PRES_SW4: Off - Oil Pressure Switch 4
-EOP_RLY: Off - Electric Oil Pump Relay
-UPSHIFT_REV: Off - Upshift Record By Engine Request
===END TCM DTC U0442:00-2F===

===PCM DTC P0102:00-AF===
Code: P0102 - Mass or Volume Air Flow Circuit Low Input

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC

Module: Powertrain Control Module

Freeze Frame :
-DTC: --- - DTC That Caused Required Snapshot Data Storage
-FUELSYS: OL - Fault - Fuel System Status (Open/Closed Loop)
-LOAD: 34.12 % - Calculated Load Value
-ECT: 61 C - Engine coolant temperature
-SHRTFT1: 0.00 % - Short term fuel trim 1
-LONGFT1: 0.00 % - Long term fuel trim 1
-MAP: 42.0 kPa - Manifold absolute pressure sensor
-RPM: 805 rev/min - Engine Revolutions Per Minute
-VSS: 0.0 km/h - Vehicle Speed
-SPARKADV: 10.00 - Spark Advance
-IAT: 46 C - Intake Air Temperature
-MAF: 0.00 g/sec - Mass Air Flow
-TP: 16.08 % - Throttle Position
-RUNTM: 54 sec - Time Since Engine Start
-FRP: 3640.0 kPa - Fuel Rail Pressure
-EVAP_PCT: 0.00 % - Commanded Evaporative Purge
-FLI: 56.47 % - Fuel Level
-WARM_UPS: 0 - Number Of Warm-ups Since DTCs Cleared
-CLR_DIST: 0.0 km - Distance since diagnostic trouble codes cleared
-BARO: 101.0 kPa - Barometric pressure
-CATEMP11: 89 C - Catalyst Temperature Bank 1, Sensor 1
-VPWR: 13.31 Volt - Control Module Voltage
-LOAD_ABS: 22.35 % - Absolute Load Value
-EQRAT11_CMD: 14.576 :1 - Commanded Equivalence Ratio (Air to Fuel Mixture) Bank 1
-TP_REL: 6.27 % - Relative Throttle Position
-TP_B: 15.69 % - Throttle Position Sensor 2
-APP_D: 15.29 % - Accelerator Pedal Position D
-APP_E: 7.84 % - Accelerator Pedal Position E
-TAC_PCT: 7.45 % - Commanded Throttle Actuator Control
-FUEL_TYPE: Gas - Type of fuel currently being utilized by the vehicle
-SHRTFT12: 0.00 % - Short Term Fuel Trim (Bank 1, Sensor 2)
-LONGFT12: 0.00 % - Long Term Fuel Trim (Bank 1, Sensor 2)
===END PCM DTC P0102:00-AF===

===PCM DTC P061B:00-AF===
Code: P061B - Internal Control Module Torque Calculation Performance

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC

Module: Powertrain Control Module

Freeze Frame :
-DTC: --- - DTC That Caused Required Snapshot Data Storage
-FUELSYS: OL - Fault - Fuel System Status (Open/Closed Loop)
-LOAD: 24.31 % - Calculated Load Value
-ECT: 58 C - Engine coolant temperature
-SHRTFT1: 0.00 % - Short term fuel trim 1
-LONGFT1: 0.00 % - Long term fuel trim 1
-MAP: 59.0 kPa - Manifold absolute pressure sensor
-RPM: 828 rev/min - Engine Revolutions Per Minute
-VSS: 0.0 km/h - Vehicle Speed
-SPARKADV: 9.50 - Spark Advance
-IAT: 47 C - Intake Air Temperature
-MAF: 0.00 g/sec - Mass Air Flow
-TP: 18.82 % - Throttle Position
-RUNTM: 5 sec - Time Since Engine Start
-FRP: 3100.0 kPa - Fuel Rail Pressure
-EVAP_PCT: 0.00 % - Commanded Evaporative Purge
-FLI: 56.47 % - Fuel Level
-WARM_UPS: 0 - Number Of Warm-ups Since DTCs Cleared
-CLR_DIST: 0.0 km - Distance since diagnostic trouble codes cleared
-BARO: 101.0 kPa - Barometric pressure
-CATEMP11: 54 C - Catalyst Temperature Bank 1, Sensor 1
-VPWR: 12.21 Volt - Control Module Voltage
-LOAD_ABS: 18.04 % - Absolute Load Value
-EQRAT11_CMD: 14.576 :1 - Commanded Equivalence Ratio (Air to Fuel Mixture) Bank 1
-TP_REL: 9.02 % - Relative Throttle Position
-TP_B: 18.43 % - Throttle Position Sensor 2
-APP_D: 15.29 % - Accelerator Pedal Position D
-APP_E: 7.84 % - Accelerator Pedal Position E
-TAC_PCT: 5.88 % - Commanded Throttle Actuator Control
-FUEL_TYPE: Gas - Type of fuel currently being utilized by the vehicle
-SHRTFT12: 0.00 % - Short Term Fuel Trim (Bank 1, Sensor 2)
-LONGFT12: 0.00 % - Long Term Fuel Trim (Bank 1, Sensor 2)
===END PCM DTC P061B:00-AF===

===OBDII DTC P0102-C===
Code: P0102 - MAF Sensor Circuit Low Input

Status:
- Confirmed - malfunction is confirmed

Module: On Board Diagnostic II

Diagnostic Trouble Code details

MAF Sensor Circuit Low Input

This DTC is set when the MAF sensor signal is lower than normal.

This DTC may be caused by :

Sensor

Improper connection

Intake system leaks

Broken or leak in inlet duct from MAF sensor.

Loose clamps on inlet duct.

Sensor

Faulty or damaged PCM.

Signal shorted to ground or signal return.

Open ground between sensor and PCM.

Signal wire open circuit between sensor and PCM.

Open circuit on ground connection at sensor.

Open circut on VBATT connection at sensor.

===END OBDII DTC P0102-C===

===ICA DTC U0401:68-28===
Code: U0401 - Invalid Data Received From ECM/PCM

Additional Fault Symptom:
- Event Information

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Smart City Brake Support

Freeze Frame :
-TOTAL_TIME: 126734352 sec - Total Time
-TOTAL_DIST: 103482.0 km - Total Distance
===END ICA DTC U0401:68-28===

===ICA DTC U0415:68-28===
Code: U0415 - Invalid Data Received From ABS Control Module

Additional Fault Symptom:
- Event Information

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Smart City Brake Support

Freeze Frame :
-TOTAL_TIME: 126734352 sec - Total Time
-TOTAL_DIST: 103482.0 km - Total Distance
===END ICA DTC U0415:68-28===

===ABS DTC U0401:00-2B===
Code: U0401 - Invalid Data Received From ECM/PCM

Status:
- DTC Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: Anti-Lock Brake / Traction Control Module

Freeze Frame :
-TOTAL_TIME: 126734352 sec - Total Time
-TOTAL_DIST: 103482.0 km - Total Distance
-IC_VPWR: 12.00 Volt - Instrument Cluster Power Supply
-AAT: 30 C - Ambient Air Temperature
-PWR_MODE_KEY: Crank (Position 3) - Power Mode Key State
-APP_STATUS: Accelerator Pedal Off - Accelerator Pedal Position Status
-CFG_STATUS: Config Complete - Configuration Status
-ECT_STATUS: 0 - Under 80 degrees C - Engine Coolant Temperature Status
-RPM_STATUS: Under 1500 rpm - Engine RPM Status
-SHIFT_STATUS: P/N - Shift Position Status
-VSPD_STATUS: Stop - Vehicle Speed Status
-IG-ON_TIMER: 2 sec - Times Since Ignition Switch ON
===END ABS DTC U0401:00-2B===

===RCM DTC None===
Successful DTC reading, no error codes found

Module: Restraint Control Module

===END RCM DTC None===

===AFS DTC None===
Successful DTC reading, no error codes found

Module: Adaptive Front Steering

===END AFS DTC None===

===SSU DTC None===
Successful DTC reading, no error codes found

Module: Start Stop Unit

===END SSU DTC None===

===EPS DTC None===
Successful DTC reading, no error codes found

Module: Electronic-Controlled Power Steering

===END EPS DTC None===

===F_BCM DTC None===
Successful DTC reading, no error codes found

Module: Front Body Control Module

===END F_BCM DTC None===

===IC DTC U0433:68-48===
Code: U0433 - Invalid Data Received From Cruise Control Front Distance Range Sensor

Additional Fault Symptom:
- Event Information

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Instrument Cluster

Freeze Frame :
-TOTAL_TIME: 126722768 sec - Total Time
-TOTAL_DIST: 103482.0 km - Total Distance
-IC_VPWR: 10.50 Volt - Instrument Cluster Power Supply
-AAT: 27 C - Ambient Air Temperature
-PWR_MODE_KEY: Running (Position 2) - Power Mode Key State
-ECT_STATUS: 0 - Under 80 degrees C - Engine Coolant Temperature Status
-CFG_STATUS: Config Complete - Configuration Status
-APP_STATUS: Accelerator Pedal Off - Accelerator Pedal Position Status
-RPM_STATUS: Under 1500 rpm - Engine RPM Status
-SHIFT_STATUS: P/N - Shift Position Status
-VSPD_STATUS: Stop - Vehicle Speed Status
-IG-ON_TIMER: 4 sec - Times Since Ignition Switch ON
===END IC DTC U0433:68-48===

===IC DTC B11D4:53-48===
Code: B11D4 - Low Speed Collision Mitigation by Braking Disabled

Additional Fault Symptom:
- Deactivated

Status:
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC
- Test not complete

Module: Instrument Cluster

Freeze Frame :
-TOTAL_TIME: 126740288 sec - Total Time
-TOTAL_DIST: 103482.0 km - Total Distance
-IC_VPWR: 12.25 Volt - Instrument Cluster Power Supply
-AAT: 31 C - Ambient Air Temperature
-PWR_MODE_KEY: Crank (Position 3) - Power Mode Key State
-ECT_STATUS: 0 - Under 80 degrees C - Engine Coolant Temperature Status
-CFG_STATUS: Config Complete - Configuration Status
-APP_STATUS: Accelerator Pedal Off - Accelerator Pedal Position Status
-RPM_STATUS: Under 1500 rpm - Engine RPM Status
-SHIFT_STATUS: P/N - Shift Position Status
-VSPD_STATUS: Stop - Vehicle Speed Status
-IG-ON_TIMER: 27 sec - Times Since Ignition Switch ON
===END IC DTC B11D4:53-48===

You have a lot of errors. I would start by giving a close look to the entire wiring harness. You may have had a rat or other rodent cutting wires. Just had that happen on a G35, started tracing circuits and pulled the battery to get to the relays and computer terminals and discovered several cut wires...

I changed the MAF sensor...problem solved. Thanks for all the help.

drflanders said:

I changed the MAF sensor...problem solved. Thanks for all the help.

Click to expand...

Very curious how did you trace to MAF sensor from all of those unrelated error codes? Nice to know your issues had been resolved!

yrwei52 said:

Very curious how did you trace to MAF sensor from all of those unrelated error codes? Nice to know your issues had been resolved!

Click to expand...

Well I used FORscan and noticed 0.00 g/sec - Mass Air Flow...from my reading online, MAF malfunction affects transmission and ABS to which all the other codes were related...I got a technician to confirm MAF was dead...

drflanders said:

Well I used FORscan and noticed 0.00 g/sec - Mass Air Flow...from my reading online, MAF malfunction affects transmission and ABS to which all the other codes were related...I got a technician to confirm MAF was dead...

Click to expand...

Nice find! But I swear you should get MFA malfunction error code if the MFA is the culprip. Very strange... (scratch)(scratch)(uhm)(uhm)

Its the second code in above list:Code: P0102 - Mass or Volume Air Flow Circuit Low Input
+ the data shows 0...

GAXIBM said:

Its the second code in above list:Code: P0102 - Mass or Volume Air Flow Circuit Low Input
+ the data shows 0...

Click to expand...

Now I see it and thanks for pointing it out! Still one bad sensor produced so many unrelated errors is a mystery to me. (uhm)

Error code testing is not focused on by mfg.