U0300 MERCURY - Internal Control Module Software Incompatibility
U0300 MERCURY Possible Causes
- Powertrain Control Module (PCM) Programmed With Incorrect Software
- Faulty Powertrain Control Module (PCM)
How is the U0300 MERCURY code repair?Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.
What is the cost to diagnose the U0300 MERCURY code
Labor: 1.0The cost to diagnose the U0300 MERCURY code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
How much do you know about cars?
Take the AutoCodes.com automotive tests and turbo-charge your car repair knowledge
- Engine Light ON (or Service Engine Soon Warning Light)
U0300 MERCURY MeaningThe U0300 code indicates there are incompatible software levels within the Powertrain Control Module (PCM) that control the Electronic Throttle Control (ETC) system. The ETC system uses multiple microprocessors within the PCM, each having its own software level and function. The microprocessors must have the correct level of software in order to communicate and function together.
More InformationNeed more information on how to fix the U0300 MERCURY code?
Get Access to Factory Service Manuals