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P0693

Overview

Code

P0693

Code Type

P

Code Class

P0

System

Engine

Severity Level

High

Emissions Related

true

Drivability Impact

Major

Diagnostic Protocol

OBD2

Freeze Frame Useful

true

Code Definition

Diagnostic trouble code P0693 indicates a malfunction in the oxygen sensor heater control circuit

Symptoms

Poor fuel economy Engine misfire

Overview applies to this diagnostic code.

Affected Systems

On This Page

  • Code Definition

  • Symptoms

  • Affected Systems

  • Possible Causes

  • Diagnostic Steps

  • Drive Safety Notes​

More Resources

Oxygen sensor heater

Possible Causes

Faulty oxygen sensor heater Wiring issues

Diagnostic Steps

1 Inspect oxygen sensor heater circuit 2 Test sensor heater functionality

Drive Safety Notes

Malfunctioning oxygen sensor heaters may impair emission control

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