P0618 Code - Alternative Fuel Control Module KAM Error
Quick Answer
P0618 indicates Alternative Fuel Control Module KAM Error. Common causes for P0618 include wiring or connector problems, a faulty related sensor or actuator, and control module or calibration issues. 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
- P0618 indicates Alternative Fuel Control Module KAM Error.
- Common causes
- Common causes for P0618 include wiring or connector problems, a faulty related sensor or actuator, and control module or calibration issues.
- 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 P0618 Description
How to Fix the DTC P0618?
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 P0618 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 P0618 Code
1. What does OBDII code P0618 mean?
P0618 indicates a "Alternative Fuel Control Module KAM (Keep-Alive Memory) Error," meaning there’s a problem with the module’s ability to retain critical data when the vehicle is off.
2. What are the common symptoms of code P0618?
Symptoms may include the check engine light turning on, poor fuel efficiency, alternative fuel system malfunctions, or rough engine performance.
3. What causes code P0618 to trigger?
This code can be caused by a dead or weak vehicle battery, faulty Alternative Fuel Control Module, wiring or connector issues, or software corruption in the control module.
4. Can a weak battery cause the P0618 code?
Yes, a weak or failing battery can cause the module to lose its Keep-Alive Memory, leading to this code.
5. How do you diagnose P0618?
Diagnosis involves checking the battery’s voltage, inspecting wiring and connectors to the Alternative Fuel Control Module, and testing the module itself for faults.
6. Is it safe to drive with code P0618?
It may be safe to drive short-term, but ignoring the issue could worsen fuel efficiency or cause drivability problems, especially if the alternative fuel system is compromised.
7. How do you fix the P0618 error?
Repairs may involve replacing the battery, repairing wiring or connectors, reprogramming the Alternative Fuel Control Module, or replacing the module entirely.
8. Can software updates fix code P0618?
Yes, in some cases, reprogramming or updating the module's software can resolve the issue if it’s caused by corrupted data.
9. How much does it cost to repair code P0618?
Repair costs vary but typically range from $100 to $500 depending on whether the issue is a simple wiring repair or a module replacement.
10. Can resetting the code fix the issue permanently?
Clearing the code may temporarily turn off the check engine light, but the issue will likely return unless the underlying problem is resolved.
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