OBDII Code List

B1342 MERCURY - ECU Is Defective

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • 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

Possible symptoms

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

B1342 Mercury Description

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.
OBDII Code B1342 Mercury - ECU Is Defective -

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Related Information

B1342 MERCURY Comments

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