Engine-Codes - Mercury - B1259 Mercury

B1259 Mercury Code - Solar Radiation Sensor Circuit Open

- Code Popularity: 816 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the Code B1259 Mercury?

  • Faulty Sunload Sensor (Solar Radiation Sensor)
  • Sunload Sensor harness is open or shorted
  • Sunload Sensor circuit poor electrical connection

|How to Fix the B1259 Mercury Code?

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 Code B1259 Mercury?

Labor: 1.0

The cost to diagnose the B1259 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.

Does your car have Safety Recalls? → Check here

|What are Code B1259 Mercury Possible Symptoms?

  • Engine Light ON (or Service Engine Soon Warning Light)

|What Does the B1259 Mercury Code Mean?

Sunload Sensor (Solar Radiation Sensor) contains a photovoltaic (sunlight sensitive) diode, which measures sunlight entering vehicle and inputs signal to the Remote Climate Control (RCC) module. The RCC Module monitors the Solar Radiation Sensor. The RCC Module sets the OBDII code when the Solar Radiation Sensor is not to factory specifications.

Solar Radiation Sensor Circuit Open

|Need more Information on the B1259 Mercury Code?

Need more information on how to fix the B1259 Mercury code? Get Access to Factory Service Manuals

|Need Help with the B1259 Mercury Code?

Get the B1259 Mercury code diagnosed by a professional: Find a repair shop in your area