Fault code P0751 – a step-by-step guide to diagnosing and fixing it

The meaning of error code P0751 – Shift Solenoid A Performance or Stuck Off/1-2 Shift Solenoid Valve Performance

P0751: Causes, signs and repairs

Error code P0751 is displayed and the check engine light is on - what does this mean?

The OBD/EOBD system has detected an error in the shift solenoid A of the automatic transmission. This DTC P0751 indicates a problem with the first gearshift stage, where the solenoid is not working properly or there is an electrical problem.

What are the possible causes of this error code?

Defective shift solenoid A
Contaminated or used transmission oil
Clogged transmission oil filter
Damaged wiring to the solenoid
Corroded or loose plug connections
Defective transmission control unit (TCM)
Mechanical damage in the transmission
Low transmission oil level

What symptoms occur in parallel with fault code P0751?

Shifting problems: The transmission does not shift into first gear or remains in the emergency running program
Jerky driving: Irregular gear changes and vibrations while driving
Delayed gear engagement: The transmission reacts with a delay when changing gear
Increased fuel consumption: Inefficient gear changes increase fuel consumption
Check engine light: The warning light lights up continuously or flashes
Emergency running program: The vehicle stops in a safe gear

How can the problem with error code P0751 be rectified?

Repairing trouble code P0751 requires a systematic approach to identify the exact cause.
Change the transmission oil and filter, as contaminated oil is often the cause of solenoid problems
Replace shift solenoid A if it is defective or clogged
Check the wiring and plug connections to the solenoid and repair if damaged
Diagnose the transmission control module (TCM) and have it replaced if defective
Check transmission oil level and top up if necessary
Carry out a complete transmission flush to remove all impurities
In the event of mechanical damage, have the transmission overhauled or replaced

FAQ - Frequently asked questions about DTC P0751

Can I continue driving with error code P0751?

Short distances are possible, but fault code P0751 can lead to serious damage to the transmission. The vehicle should be taken to a workshop as soon as possible, as the transmission is running in emergency mode.

How much does it cost to repair fault code P0751?

The costs vary depending on the cause: oil change 150-300€, solenoid replacement 300-600€, wiring repair 200-400€, transmission overhaul 2000-4000€. A precise diagnosis is required for a cost estimate.

How long does the repair of code P0751 take?

A simple oil change takes 1-2 hours, solenoid replacement 3-5 hours. More complex repairs such as transmission overhauls may take several days.

Can I repair fault code P0751 myself?

Basic work such as oil changes are possible, but solenoid replacement and transmission diagnostics require specialist knowledge and tools. Professional help is recommended for this EOBD code.

Does error code P0751 return after the repair?

With proper repair and regular maintenance, the code should not recur. Regular transmission oil changes and the use of the correct oil are important.

What consequential damage can error code P0751 cause?

Untreated P0751 can lead to complete gearbox failure, overheating, damage to other solenoids and costly gearbox repairs. Early repair prevents expensive consequential damage.

Vehicles in which error code P0751 occurs most frequently

Error code P0751 is a transmission-specific OBD code and can occur in all vehicles with automatic transmissions, but is most common in the following vehicles:

Ford: Focus, Fiesta, Mondeo, Explorer (2005-2015)
General Motors: Chevrolet Malibu, Impala, Buick LaCrosse (2006-2014)
Honda: Accord, Civic, CR-V, Pilot (2003-2012)
Toyota: Camry, Corolla, RAV4, Highlander (2004-2013)
Nissan: Altima, Sentra, Maxima, Murano (2005-2016)
Volkswagen: Jetta, Passat, Golf, Tiguan (2006-2015)
BMW: 3 Series, 5 Series, X3, X5 (2004-2014)
Mercedes-Benz: C-Class, E-Class, ML-Class (2005-2013)

If code P0751 occurs in your vehicle, you should not hesitate and visit a specialist workshop as soon as possible. Modern gearboxes are complex systems that require professional diagnosis and repair at the first sign of problems. Early treatment of this error code can prevent expensive follow-up repairs and significantly extend the service life of your transmission.

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