AutoCodes – Mercedes-Benz – P0322 Mercedes-Benz

P0322 Mercedes-Benz Code - Ignition/Distributor Engine Speed Input Circuit No Signal

Quick Answer

Ignition failure sensor is used to check whether the spark ignition is occurred correctly or not and also used to tachometer drive. Common causes include Faulty Ignition/Distributor engine speed sensor, Ignition/Distributor engine speed sensor harness is open or shorted, Ignition/Distributor engine speed sensor 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: P0322 Mercedes-Benz indicates Ignition/Distributor Engine Speed Input Circuit No Signal.
Common causes: Common causes include Faulty Ignition/Distributor engine speed sensor, Ignition/Distributor engine speed sensor harness is open or shorted, Ignition/Distributor engine speed sensor 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 4,659

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 Apr 16, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0322 Mercedes-Benz Description

Ignition failure sensor is used to check whether the spark ignition is occurred correctly or not and also used to tachometer drive. The sensor monitors the voltage difference between a resistance which is on the battery circuit for ignition coil. When the ignition coil works properly, the electric current through the resistance is detected as voltage drop. This is confirmed for every ignition event with the crankshaft sensor and the camshaft sensor. If ECM detects a malfunction, no ignition is possible, so the engine would not start. If there is no ignition signal for a predetermined cycle for one or two ignition coils, an ignition coil circuit failure exists.

OBDII Code P0322 Mercedes-Benz - Ignition/Distributor Engine Speed Input Circuit No Signal - AutoCodes.com — P0322 Mercedes-Benz Code - Ignition/Distributor Engine Speed Input Circuit No Signal

What does this mean?

What are the Possible Causes of the DTC P0322 Mercedes-Benz?

Faulty Ignition/Distributor engine speed sensor
Ignition/Distributor engine speed sensor harness is open or shorted
Ignition/Distributor engine speed sensor circuit poor electrical connection
Faulty Crankshaft Position sensor
Low battery charge
Faulty Engine Control Module (ECM)

How to Fix the DTC P0322 Mercedes-Benz?

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 P0322 Mercedes-Benz 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 P0322 Mercedes-Benz code?

Need more information on how to fix the P0322 Mercedes-Benz code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0322 Mercedes-Benz code diagnosed by a professional: Find a repair shop in your area

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 P0322 Mercedes-Benz Code

1. What are the common symptoms of OBDII code P0322 in a Mercedes-Benz?

- Common symptoms include engine misfires, rough idling, stalling, and difficulty starting the vehicle.

2. What can cause the OBDII code P0322 in a Mercedes-Benz?

- The code P0322 is typically triggered by a faulty crankshaft position sensor, damaged wiring in the ignition/distributor circuit, or a defective engine control module (ECM).

3. How do I diagnose the OBDII code P0322 in my Mercedes-Benz?

- A diagnostic scan tool can help pinpoint the issue by reading the specific fault codes stored in the ECM. Additionally, checking the crankshaft position sensor and inspecting the wiring for any damage can help in the diagnosis.

4. Can I continue driving my Mercedes-Benz with the OBDII code P0322?

- It is not recommended to continue driving with the code P0322 as it can lead to further engine damage or potential safety hazards. It is best to address the issue promptly.

5. How do I repair the Ignition/Distributor Engine Speed Input Circuit No Signal in my Mercedes-Benz?

- Depending on the underlying cause, the repair may involve replacing the crankshaft position sensor, repairing damaged wiring, or reprogramming/resetting the ECM.

6. Is it possible to reset the OBDII code P0322 without fixing the issue in my Mercedes-Benz?

- Resetting the code without addressing the root cause will only temporarily clear the check engine light. The code is likely to reappear once the issue persists.

7. Can a DIY enthusiast fix the OBDII code P0322 in a Mercedes-Benz?

- While some may attempt DIY repairs, diagnosing and fixing this code may require specialized tools and expertise. It is recommended to consult a professional mechanic for accurate diagnosis and repairs.

8. How much does it cost to repair the OBDII code P0322 in a Mercedes-Benz?

- Repair costs can vary depending on the exact cause of the issue and labor rates in your area. It is advisable to get a diagnosis from a mechanic to determine the specific repair cost.

9. Will fixing the OBDII code P0322 improve my Mercedes-Benz's performance?

- Addressing the code P0322 can restore proper engine function, improve fuel efficiency, and prevent potential drivability issues like stalling or rough idling.

10. How often does the OBDII code P0322 occur in Mercedes-Benz vehicles?

- The OBDII code P0322 related to the Ignition/Distributor Engine Speed Input Circuit No Signal is relatively uncommon in Mercedes-Benz vehicles but can still occur due to various factors.