AutoCodes – Dodge – P1222 Dodge

P1222 Dodge Code - Leak Detection During Motoring

Quick Answer

When the engine is motoring (i.e. Common causes include Reprogram Engine Control Module (ECM), Faulty Fuel Injector, Fuel Injector harness is open or shorted. 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: P1222 Dodge indicates Leak Detection During Motoring.
Common causes: Common causes include Reprogram Engine Control Module (ECM), Faulty Fuel Injector, Fuel Injector harness is open or shorted.
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 17,705

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 11, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1222 Dodge Description

When the engine is motoring (i.e. Engine is running but requires no fuel injection) the only required fuel delivery to the rail is due to natural leakage in the system. The natural leakage depends directly on the rail pressure. A definite amount of fuel is required to overcome the natural leakage, for different fuel pressures. The Engine Control Module (ECM) sets Leakage Detected when the fuel flow exceeds an expected value. When a leak is detected in the system, a counter is initiated. When the counter reaches a predetermined value, a fault is set and engine derate is enabled. When the leak is not detected the counter counts down, and once the counter becomes zero the engine is set back to normal running conditions. The Diagnostic Trouble Code (DTC) will set when the counter reaches a calibrated value.

OBDII Code P1222 Dodge - Leak Detection During Motoring - AutoCodes.com — P1222 Dodge Code - Leak Detection During Motoring

What does this mean?

What are the Possible Causes of the DTC P1222 Dodge?

Reprogram Engine Control Module (ECM)
Faulty Fuel Injector
Fuel Injector harness is open or shorted
Fuel Injector circuit poor electrical connection

How to Fix the DTC P1222 Dodge?

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 P1222 Dodge 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.

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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.

Frequently Asked Questions about P1222 Dodge Code

1. What are common symptoms of OBDII code P1222 in a Dodge related to leak detection during motoring?

The common symptoms include rough idling, poor acceleration, decreased fuel efficiency, and potential stalling while driving.

2. What typically causes the OBDII code P1222 in a Dodge related to leak detection during motoring?

This code is often triggered by a vacuum leak in the engine's air intake system, a faulty EVAP system, or issues with the vehicle's fuel system.

3. How can I diagnose the source of the leak causing OBDII code P1222 in my Dodge?

Perform a visual inspection of the vacuum lines, check the EVAP system components for leaks, and use a smoke machine to pinpoint the exact location of the air leak.

4. Can a dirty air filter trigger the OBDII code P1222 in a Dodge?

Yes, a clogged or dirty air filter can disrupt the air-fuel mixture, causing the engine to run lean and potentially triggering the P1222 code.

5. What are some basic repair tips for resolving the OBDII code P1222 in a Dodge related to leak detection during motoring?

Start by checking and replacing any damaged vacuum lines, repairing or replacing faulty EVAP system components, and ensuring the fuel system is operating correctly.

6. Is it safe to continue driving my Dodge with the OBDII code P1222 related to leak detection during motoring?

It is not recommended to drive the vehicle with this code active, as it can lead to further engine damage and potential safety hazards. It is best to address the issue promptly.

7. Can a DIY enthusiast fix the OBDII code P1222 in a Dodge themselves?

Depending on your mechanical skills and access to tools, DIY enthusiasts can attempt to diagnose and repair this code. However, if unsure, it is best to consult a professional mechanic.

8. How much does it typically cost to repair the OBDII code P1222 in a Dodge at a mechanic's shop?

The cost of repairing this code can vary depending on the exact cause of the issue, but it can range from $100 to $500 or more, including parts and labor.

9. Will resetting the OBDII code P1222 in my Dodge make it go away permanently?

Resetting the code without addressing the underlying issue will only temporarily clear the check engine light. The code is likely to reappear until the root cause is fixed.

10. How long does it usually take to repair the OBDII code P1222 in a Dodge related to leak detection during motoring?

The repair time can vary based on the specific problem, but it may take a few hours to a full day for a mechanic to diagnose and fix the issue related to code P1222.