Skip the auto shop - Our mechanics make house calls

Q: I need help with diagnostic trouble codes that suddenly appeared making vehicle almost undriveable.

asked by on

I have a 2012 Mazda CX-5 that i imported from Japan about 9 months ago. When I started a week ago one 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. i subsequently had the ECU reflashed by a mazda technician. Car drove fine on test run. Parked it up for a few hours and problem returned. i changed the battery..same problem.

My car has 67000 miles.
My car has an automatic transmission.

A: Firstly, you should have the battery discon...

Firstly, you should have the battery disconnected and the PCM disconnected. Check their connectors for any problems and apply dielectric lube to the connectors so the connection is clean from corrosion. If the problem continues then replace the PCM. All the codes are related to PCM miscalculations or data read problems. Have another certified technician, like one from YourMechanic, diagnose the trouble codes firsthand in order to pinpoint the issue.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: My car won't start - 1997 Jeep Wrangler

Hi and thanks for your question. It seems to be the ignition switch in your vehicle. The switch is cutting out all of the power. There could be a loose ground to the switch or the tumbler could have shorted...

Q: I cannot get my bluetooth to work

Hello, having a convenience feature not working properly can be annoying, especially when it has to do with the entertainment system. It appears that Mazda has recognized this issue in Technical Service Bulletin (TSB 09-008/15) to resolve issues with the...

Q: overheating no cooling fans

The relays are turned on by the Powertrain Control Module (PCM) by grounding the control wire of the relays. The PCM needs input from the engine coolant sensor above the water pump to sense whether the engine is overheating before...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...