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Code P107C

Quick reference

P107C at a glance

Plain-language meaning
The car's engine has a system to control how the valves open and close, and it's getting too hot. It's like when you play a video game too long and the console gets really warm.
Urgency
High – Prolonged driving with this issue can lead to severe engine damage.
Difficulty
Moderate
System
Engine Performance
Tools mentioned
OBD-II scanner, Multimeter, Wrench set

This summary uses the existing diagnostic information shown in full below.

Laymans terms

The car's engine has a system to control how the valves open and close, and it's getting too hot. It's like when you play a video game too long and the console gets really warm.

Explanation

The Variable Valve Lift (VVL) system is designed to optimize engine performance by adjusting the lift of the engine's valves. This code indicates that the system's temperature has exceeded safe operating limits.

Technical description

The P107C code is triggered when the Engine Control Module (ECM) detects that the temperature of the Variable Valve Lift (VVL) system exceeds the manufacturer's specified limit, potentially due to overloading or a malfunction in the cooling system.

Symptoms

• Check Engine Light is on

• Reduced engine performance

• Engine overheating

Common Causes

• Faulty VVL actuator

• Insufficient engine cooling

• Wiring issues or short circuits in the VVL system

Glossary

VVL: Variable Valve Lift, a system that adjusts the lift of the engine's valves.

ECM: Engine Control Module, the computer that controls engine functions.

Diagnosis steps

• Read the OBD-II codes using a scanner.

• Inspect the VVL actuator and related wiring.

• Check the engine cooling system for proper operation.

Repair procedures

• Replace the faulty VVL actuator.

• Repair or replace damaged wiring.

• Ensure the cooling system is functioning correctly.

Tools required

• OBD-II scanner

• Multimeter

• Wrench set

Estimated repair cost

$200 - $600

Difficulty level

Moderate

Commonly affected vehicles

• BMW 3 Series

• BMW 5 Series

• BMW X5

Preventive measures

• Regular maintenance of the cooling system

• Routine checks of the VVL system

• Avoiding engine overloading

Error code type

Engine Performance

User experience recommendations

• Do not ignore the Check Engine Light.

• Avoid driving the vehicle until the issue is resolved to prevent further damage.

Warranty information

Check with the vehicle manufacturer for specific warranty coverage on engine components.

Historical data

This code has been more prevalent in vehicles with advanced VVL systems, particularly in models with high-performance engines.

Urgency level

High – Prolonged driving with this issue can lead to severe engine damage.

Testing conditions

• Engine at operating temperature

• Vehicle in a controlled environment

Component location

The VVL actuator is typically located on the cylinder head near the camshaft.

FAQs

Q: Can I drive with a P107C code?
A: It's not recommended to drive with this code as it indicates potential overheating, which can damage the engine.

Q: How do I reset the P107C code?
A: After fixing the issue, the code can be reset using an OBD-II scanner.

Optional diagnostic gear

Tools that may help diagnose P107C

THINKCAR ThinkScan Bidirectional diagnostic tool illustration

High-End · Full-system diagnostics

THINKCAR ThinkScan Bidirectional

A full-system bidirectional platform aimed at advanced DIY users and professional diagnostic workflows.

Network faults often require full-system access instead of a generic code reader alone.

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Klein Tools MM325 diagnostic tool illustration

Universal · Digital multimeter

Klein Tools MM325

A solid entry-level multimeter for voltage, continuity, resistance, and basic electrical troubleshooting.

Helpful for checking voltage drops, grounds, and basic circuit health when modules are not communicating.

View on Amazon
WORKPRO Wiring Repair Kit diagnostic tool illustration

Universal · Wire connectors and repair kit

WORKPRO Wiring Repair Kit

Useful when diagnosis points toward damaged wiring, corroded terminals, or connector repairs.

Useful if diagnosis points toward damaged connectors, wiring, or terminal repairs.

View on Amazon

These are optional diagnostic tools, not guaranteed fixes. As an Amazon Associate I earn from qualifying purchases.

Source: ezOBD2 diagnostic database
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