Engine-Codes - Mercury - B1342 MERCURY

B1342 MERCURY Code - ECU Is Defective

- Code Popularity: 6,873 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
Table of contents

|What are the Possible Causes of the B1342 MERCURY Code?

  • The B1342 code means that the Electronic Control Unit (ECU) has failed, usually the code is combine with other issues or codes. Repair other problems before replacing the ECU

|How to Fix the B1342 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 B1342 MERCURY code?

Labor: 1.0

The cost to diagnose the B1342 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.

|What are B1342 MERCURY code possible symptoms?

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

|What Does the B1342 MERCURY Code Mean?

When a repetitive fault causing a circuit overload is detected on certain output circuits, the Smart Junction Box (SJB) disables the circuit by removing voltage, or ground, to the affected circuit. The circuit remains disabled until the fault is corrected and an on-demand self-test is run. When the on-demand self-test has been run after all faults have been corrected, any Diagnostic Trouble Code (DTC) related to the fault are cleared.

ECU Is Defective

|Need more information with the B1342 MERCURY code?

Need more information on how to fix the B1342 MERCURY code?
Get Access to Factory Service Manuals

|Need help with a B1342 MERCURY code?

Get the b1342 mercury code diagnosed by a professional: Find a repair shop in your area