Fault code P0753 – a step-by-step guide to diagnosing and fixing it

Error code P0753 is displayed and the check engine light is on - what does this mean?

The OBD/EOBD system has detected a fault in the shift solenoid valve A of the automatic transmission. This DTC P0753 indicates a problem with the circuit of the first shift solenoid valve, which is responsible for the gear shift. The exact designation may vary for different manufacturers, but it always relates to the transmission control system.

What causes can this error code have?

• Defective shift solenoid valve A in the automatic transmission
• Damaged or corroded cable connections to the solenoid valve
• Loose or dirty plug connections on the transmission control unit
• Low or dirty transmission oil level
• Clogged transmission oil filter
• Defective transmission control unit (TCM)
• Internal transmission damage or wear
• Faulty wiring between control unit and solenoid valve

What symptoms occur in parallel with fault code P0753?

• Shifting problems: The automatic transmission shifts jerkily or with a delay between gears
• Stuck gear: The transmission gets stuck in a certain gear and does not shift any further
• Emergency running program: The vehicle switches to safety mode with limited gear selection
• Increased fuel consumption: Fuel consumption increases significantly due to inefficient gear changes
• Unusual noises: Rattling or whirring noises from the transmission area
• Jerking when starting off: The vehicle jerks when starting off or at low speeds

How can the problem with error code P0753 be rectified?

• The repair requires a systematic diagnosis, as several components may be affected.
• Check the transmission oil level and quality, change the oil and replace the filter if necessary
• Check electrical connections on shift solenoid valve A for corrosion and tight fit and clean
• Remove solenoid valve A, clean or replace completely if defective
• Measure the wiring between the transmission control unit and solenoid valve with a multimeter and repair damaged cables
• Diagnose transmission control unit (TCM) and replace or reprogram if defective
• Carry out a complete transmission flush if contamination is the cause
• In the event of internal transmission damage, carry out a general overhaul or replace the automatic transmission