P0787 Mercedes-Benz Code - Shift/Timing Solenoid Low
Quick Answer
Shift solenoid valve ST is switched ON OFF by a signal from Engine Control Module (ECM) so that let in or out timing of 2nd brake is adjusted by operating orifice control valve. Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shifting solenoid valve. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P0787 Mercedes-Benz indicates Shift/Timing Solenoid Low.
- Common causes
- Common causes include Low transmission fluid level, Dirty transmission fluid, Faulty shifting solenoid valve.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P0787 Mercedes-Benz Description
What are the Possible Causes of the DTC P0787 Mercedes-Benz?
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shifting solenoid valve
- Shifting solenoid valve harness is open or shorted
- Shifting solenoid valve circuit poor electrical connection
How to Fix the DTC P0787 Mercedes-Benz?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0787 Mercedes-Benz code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0787 Mercedes-Benz Code
What does OBDII code P0787 mean for a Mercedes-Benz?
P0787 indicates an issue with the shift/timing solenoid in the transmission, specifically that its signal is reading as "low" or outside acceptable parameters.
What are the common symptoms of code P0787 in a Mercedes-Benz?
Symptoms typically include erratic shifting, slipping gears, delayed gear engagement, reduced fuel efficiency, and the check engine light turning on.
What causes code P0787 in a Mercedes-Benz?
Common causes include a malfunctioning shift/timing solenoid, transmission fluid contamination, wiring issues (such as shorts or corrosion), or a faulty transmission control module (TCM).
Can driving with code P0787 damage the vehicle?
Yes, prolonged driving with this code can lead to further transmission damage and reduced performance, potentially resulting in costly repairs.
How can I diagnose code P0787 in my Mercedes-Benz?
Start by scanning for trouble codes with an OBDII scanner, check the transmission fluid condition and level, inspect the wiring and connectors, and test the shift solenoid for proper function.
How do I fix code P0787 on a Mercedes-Benz?
Repairs may involve replacing the shift solenoid, flushing or refilling transmission fluid, repairing damaged wiring, or reprogramming or replacing the transmission control module.
Can dirty or low transmission fluid trigger code P0787?
Yes, dirty or insufficient transmission fluid can affect solenoid performance and lead to this code.
What tools are needed to fix code P0787 in a Mercedes-Benz?
Common tools include an OBDII scanner, basic mechanics tools, a multimeter for electrical testing, and potentially specialty tools for transmission work.
How much does it cost to repair code P0787 in a Mercedes-Benz?
Repair costs vary but typically range from $200 to $600 for solenoid replacement. More extensive transmission repairs could be significantly higher.
Is code P0787 specific to Mercedes-Benz vehicles?
No, P0787 is a generic OBDII code that can appear in various vehicles, but the exact repair process may differ depending on the make and model.
Discuss the causes and fixes for P0787 Mercedes-Benz OBDII Code
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