P0723 Mercedes-Benz Code - Output Speed Sensor Intermittent Signal
Quick Answer
The speed sensor detects the revolution of the idler gear parking pawl lock gear and emits a pulse signal. Common causes include Faulty Speed Sensor, Speed Sensor harness is open or shorted, 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
- P0723 Mercedes-Benz indicates Output Speed Sensor Intermittent Signal.
- Common causes
- Common causes include Faulty Speed Sensor, Speed Sensor harness is open or shorted, 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.
Code P0723 Mercedes-Benz Description
What are the Possible Causes of the DTC P0723 Mercedes-Benz?
- Faulty Speed Sensor
- Speed Sensor harness is open or shorted
- Speed Sensor circuit poor electrical connection
How to Fix the DTC P0723 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 P0723 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.
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Frequently Asked Questions about P0723 Mercedes-Benz Code
1. What does the OBDII code P0723 mean on a Mercedes-Benz?
P0723 indicates an intermittent signal from the output speed sensor, which monitors the transmission's output shaft speed.
2. What are the common symptoms of a P0723 code on a Mercedes-Benz?
Symptoms may include erratic shifting, the transmission staying in one gear, reduced fuel efficiency, or the check engine light turning on.
3. What causes the P0723 code on a Mercedes-Benz?
Common causes include a faulty output speed sensor, damaged wiring or connectors in the sensor circuit, or issues with the transmission control module (TCM).
4. Can driving with a P0723 code damage my Mercedes-Benz?
Yes, prolonged driving with this code can cause further transmission issues, as improper shifting may lead to increased wear and tear on transmission components.
5. How do I diagnose the P0723 code on a Mercedes-Benz?
Diagnosis typically involves scanning for codes, inspecting the output speed sensor and its wiring for damage, and testing the sensor's functionality with a multimeter.
6. How can a faulty output speed sensor trigger the P0723 code?
A malfunctioning sensor may send inconsistent or no signals to the TCM, confusing the system about the transmission's output shaft speed.
7. Can a low transmission fluid level cause a P0723 code on a Mercedes-Benz?
While not a direct cause, low or contaminated transmission fluid can lead to transmission issues that might indirectly trigger this code.
8. How do you fix a P0723 code on a Mercedes-Benz?
Repairs may include replacing the output speed sensor, repairing damaged wiring, or reprogramming or replacing the TCM if necessary.
9. How much does it cost to fix a P0723 code on a Mercedes-Benz?
Costs vary but typically range from $100 to $300 for a new speed sensor, plus labor. Wiring or TCM repairs may increase the expense.
10. Can clearing the P0723 code solve the problem?
Clearing the code without addressing the underlying issue will only temporarily remove the error and it is likely to return.
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