Common symptoms of a failing 2010 2014 2.0 2.3 2.5 Liter Engine Size

Applicable to Mazda 3 TCM:

- Check Engine and AT lights are on

- Vehicle stays in 3rd gear only (safe mode)

- Hard "kick" on "drive" and "reverse"

- Gears shifting hard

Trouble codes:

- U0101, U0100 (Loss of communication with Transmission Control Module)

- P0753 (Shift Solenoid 'A' Malfunction)

- P0758 (Shift Solenoid 'B' Malfunction)

- P0763 (Shift Solenoid 'C' Malfunction)

- OTHER CODE/S POSSIBLE AS WELL

First things first:

Have problems begun?

Is the car running in emergency mode?

Problems with the MAZDA automatic gearbox control module appear suddenly and do not depend on the season of year and the mileage of the car. Do not rush to go to the auto repair shop for automatic transmission; it is often sufficient to reset your TCM (Transmission Control Module).

Symptoms of MAZDA TCM faulty in the car are:

• Strong "kick" when switching automatic grip from position "P" to position "R"

• Indication on the dash fascia "Check Engine", "AT", "ABS""Slippery Road" (ESP)etc.

• Gearbox does not go to "manual mode"

• The car goes in emergency mode only

Typical OBD error codes are

• Error u0073 - control Module Communication Bus "A" is off (the e-Data bus control is disabled)

• Error U0100 - Lost Communication with ECM/PCM "a" error (data bus, engine control module (ECM) "A"-no link)

• Error u0101 - Lost Communication with TCM (data bus, transmission control module (TCM) - no link)

• Error p0715 - Input/Turbine Speed sensor "A" Circuit (the rotation frequency sensor of the input shaft of automatic gearbox (Hydrotransformer turbine)- Electrical circuit failure)

• Error P0720 - Output Speed sensor Circuit error (shaft rotation frequency sensor - fault of electrical circuit)

• Error p0744 - Torque Converter Clutch Circuit Intermittent (Electromagnetic valve coupling of a hydro transformer - unreliable pin of the electrical circuit)

• Error p0745 - Pressure control solenoid valve manifold "A" (Gearbox Electromagnetic fluid pressure control valve - electric circuit fault)

• Error p0748 - Pressure control solenoid valve manifold "A" Electrical Gearbox (electromagnetic pressure control valve - electrical malfunction)

• Error p0753 - Shift solenoid valve manifold "A" Electrical (Gearbox electromagnetic valve A - electrical malfunction)

• Error p0758 - Shift solenoid valve manifold "B" Electrical (Gearbox electromagnetic valve B in - electrical malfunction)

• Error p0763 - Shift solenoid valve manifold "C" Electrical (Gearbox electromagnetic valve C in - electrical malfunction)

• Error p0768 - Shift solenoid valve manifold "D" Electrical (Gearbox electromagnetic valve D - electrical malfunction)

• Error p0773 - Shift solenoid valve manifold "E" Electrical (Gearbox electromagnetic valve E in - electrical malfunction)

• Error p0778 - Pressure control solenoid valve manifold "B" electrical (electromagnetic valve B in pressure control - electrical malfunction)

• Error p0791 - Intermediate Shaft speed sensor "A" Circuit (intermediate shaft frequency sensor - failure of the electrical circuit)

• Error P0841 - Transmission Fluid Pressure sensor/Switch "A" error - Circuit Range/performance (sensor A of the pressure of the work fluid of gearbox - band/function)

• Error P0882 - TCM Power Input Signal Low (Gearbox electronic control module - low power supply voltage)

• Error P0883 - TCM Power Input Signal Low (Gearbox electronic control module - high power supply voltage)

• Error p0884 - TCM Power Input Signal Intermittent (Gearbox electronic control module (TCM), input power signal - unreliable pin of the electrical circuit)

• Error p2709 - Shift solenoid valve manifold "F" Electrical (electromagnetic valve F gear switches - electrical malfunction)

• Other errors (in rare cases)