AutoCodes – Generic – P0212

P0212 Code - Injector Circuit Malfunction Cylinder 12

Quick Answer

Engine Control Module (ECM) checks the injectors circuit resistance and monitors the voltage drop during normal operation. Common causes include Faulty fuel injector 12, Fuel Injector 12 harness is open or shorted, Fuel Injector #12 circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0212 indicates Injector Circuit Malfunction Cylinder 12.
Common causes: Common causes include Faulty fuel injector 12, Fuel Injector 12 harness is open or shorted, Fuel Injector #12 circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 11,977

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code P0212 Description

Engine Control Module (ECM) checks the injectors circuit resistance and monitors the voltage drop during normal operation. The ECM will trigger the P0212 code when the resistance or voltage drop at the injector 12 is out of specifications.

OBDII Code P0212 - Injector Circuit Malfunction Cylinder 12 - AutoCodes.com — P0212 Code - Injector Circuit Malfunction Cylinder 12

What does this mean?

What are the Possible Causes of the DTC P0212?

Faulty fuel injector 12
Fuel Injector 12 harness is open or shorted
Fuel Injector #12 circuit poor electrical connection

How to Fix the DTC P0212?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0212 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0212 code?

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Need Help with the Code?

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Information for Specific Makes

P0212 Dodge — Injector Circuit Malfunction Cylinder 12
P0212 Ford — Injector Circuit Malfunction Cylinder 12
P0212 Mercedes-Benz — Injector Circuit/Open Cylinder 12
P0212 Volkswagen — Injector Circuit Open Cylinder 12

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.