P0655 Mercedes-Benz Code - Engine Hot Lamp Output Control Circuit Malfunction
Quick Answer
The Engine Control Module (ECM) monitors the Engine Hot Lamp Output Control Circuit. Common causes include Faulty Engine Hot Lamp, Engine Hot Lamp harness is open or shorted, Engine Hot Lamp 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
- P0655 Mercedes-Benz indicates Engine Hot Lamp Output Control Circuit Malfunction.
- Common causes
- Common causes include Faulty Engine Hot Lamp, Engine Hot Lamp harness is open or shorted, Engine Hot Lamp 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 P0655 Mercedes-Benz Description
What are the Possible Causes of the DTC P0655 Mercedes-Benz?
- Faulty Engine Hot Lamp
- Engine Hot Lamp harness is open or shorted
- Engine Hot Lamp circuit poor electrical connection
How to Fix the DTC P0655 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 P0655 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 P0655 Mercedes-Benz Code
What does the OBDII code P0655 mean for a Mercedes-Benz?
P0655 indicates a malfunction in the Engine Hot Lamp Output Control Circuit, which is responsible for signaling overheating conditions via the dashboard warning light.
What are the common symptoms of the P0655 code?
Symptoms may include the engine overheating warning light not functioning, an illuminated check engine light, and potential overheating issues if the warning system fails to notify the driver.
What causes the P0655 code on a Mercedes-Benz?
Common causes include a faulty Engine Hot Lamp circuit, damaged wiring or connectors, a malfunctioning control module, or issues with the temperature sensor.
Can I drive my Mercedes-Benz with a P0655 code?
It’s not recommended to drive the vehicle without addressing the issue, as the malfunction could prevent proper overheating warnings, potentially leading to engine damage.
How is the P0655 code diagnosed?
A technician will use a diagnostic scanner to confirm the code, inspect the wiring and connectors, test the Engine Hot Lamp circuit, and check the temperature sensor and control module for proper operation.
What repairs are typically needed for P0655?
Repairs may involve replacing damaged wiring, connectors, or the Engine Hot Lamp itself, as well as addressing issues with the temperature sensor or control module.
Can a faulty temperature sensor trigger the P0655 code?
Yes, a malfunctioning temperature sensor can cause incorrect signals to the Engine Hot Lamp circuit, resulting in the P0655 code.
How much does it cost to repair the P0655 code in a Mercedes-Benz?
Repair costs vary depending on the root cause but can range from $100 to $500 for diagnostics, parts, and labor.
Can the P0655 code cause engine overheating?
While the code itself doesn’t directly cause overheating, it can prevent the driver from being alerted to overheating conditions, increasing the risk of engine damage.
How can I prevent the P0655 code from occurring?
Regular maintenance, including inspecting wiring and connectors, monitoring the temperature sensor, and ensuring the control module functions properly, can help prevent this issue.
Discuss the causes and fixes for P0655 Mercedes-Benz OBDII Code
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