Fault code P0773 – a step-by-step guide to diagnosing and fixing it

The meaning of error code P0773 – Shift Solenoid E Electrical

P0773: Causes, signs and repairs

Error code P0773 is displayed and the check engine light is on - what does this mean?

The DTC P0773 is recognized by the OBD system if there is a problem with the solenoid valve E of the automatic transmission. This trouble code indicates a malfunction in the shift valve control circuit, which can affect the proper shifting of gears.

What can cause this error code?

Defective shift solenoid valve E
Damaged wiring to the solenoid valve
Corroded or loose plug connections
Low transmission oil level or contaminated ATF
Defective transmission control unit (TCM)
Clogged transmission oil filter
Mechanical problems in the valve body
Short circuit or interruption in the circuit

What symptoms occur in parallel with fault code P0773?

Shifting problems: Jerky or delayed gear changes
Emergency running program: The transmission only shifts in a few gears
Increased fuel consumption: Due to inefficient gear changes
Starting problems: Vehicle may not start in park or neutral gear
Overheating: The transmission may overheat during prolonged driving
Unusual noises: Rattling or buzzing from the transmission area

How to fix the problem of error code P0773?

Repairing EOBD fault code P0773 requires a systematic approach to diagnosing and eliminating the underlying cause.
Check the transmission oil level and top up with ATF if necessary or change it completely, as low or contaminated oil levels are often the cause of solenoid valve problems
Check wiring and plug connections to solenoid valve E for damage, corrosion or loose contacts and replace defective components
Remove solenoid valve E, clean or replace with a new valve if cleaning is not sufficient
Read out transmission control unit (TCM) for fault memory and reprogram or replace if necessary
Change transmission oil filter and clean valve body to remove blockages
Carry out a complete electrical continuity check of the solenoid valve circuit and repair defective cables

FAQ - Frequently asked questions about DTC P0773

Can I continue driving with error code P0773?

It is possible to drive for a short time, but you should take the vehicle to a workshop as soon as possible. The transmission may run in emergency mode and further damage is possible.

How much does it cost to repair error code P0773?

The repair costs vary between 150-800 euros, depending on the cause. An oil change costs around 150-250 euros, while replacing the solenoid valve can cost 300-500 euros.

How can I delete error code P0773 myself?

The code can be deleted with an OBD scanner, but will return if the cause has not been rectified. Professional diagnosis is recommended.

Is error code P0773 the same for all manufacturers?

Yes, P0773 is a standardized DTC code that has the same meaning for all manufacturers. However, the specific repair procedures may vary.

Can low transmission fluid cause code P0773?

Yes, low or contaminated ATF oil level is one of the most common causes of this fault code, as the solenoid valve cannot work properly.

How long does it take to repair fault code P0773?

Depending on the cause, the repair can take 2-6 hours. A simple oil change takes around 1-2 hours, while valve body removal can take longer.

Vehicles in which error code P0773 occurs most frequently

Error code P0773 is an automatic transmission-specific DTC and can occur in various vehicle models with automatic transmission, but is most common in the following vehicles:

Honda: Accord, Civic, CR-V, Pilot, Odyssey (2003-2015)
Acura: TL, MDX, TSX, RDX (2004-2014)
Toyota: Camry, Corolla, RAV4, Highlander (2002-2016)
Lexus: ES, RX, GS, IS (2005-2017)
Nissan: Altima, Maxima, Murano, Pathfinder (2003-2014)
Infiniti: G35, G37, FX35, QX56 (2004-2013)
Mazda: Mazda6, CX-7, CX-9 (2005-2015)
Mitsubishi: Outlander, Lancer, Eclipse (2004-2012)

If code P0773 occurs in your vehicle, you should first check the transmission oil level and avoid overloading the vehicle. A prompt diagnosis at a specialist workshop is advisable in order to avoid more costly consequential damage to the automatic transmission. This error code occurs more frequently, especially in older vehicles with high mileage.

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