Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This means there's a problem with a part of the car that helps save battery power. It's not working right, like a light switch that's stuck.
The code indicates that the voltage level in the Variable Valve Lift (VVL) load shedding relay control circuit is lower than expected.
The P101D code is triggered when the Engine Control Module (ECM) detects a low voltage condition in the circuit that controls the load shedding relay for the Variable Valve Lift system. This relay helps manage electrical loads by disconnecting non-essential components to preserve battery power during high demand situations.
• Check engine light on
• Reduced fuel efficiency
• Possible engine performance issues
• Faulty VVL load shedding relay
• Poor electrical connections
• Damaged wiring or connectors
VVL: Variable Valve Lift
ECM: Engine Control Module
• Scan for codes and freeze frame data
• Inspect the VVL load shedding relay and its connections
• Test the wiring and connectors for continuity and shorts
• Replace the faulty relay
• Repair or replace damaged wiring
• Ensure all connections are secure and clean
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $250
Moderate
• Nissan Altima
• Infiniti G35
• Nissan Maxima
• Regular maintenance checks
• Ensure battery terminals are clean
• Inspect wiring for wear and tear
Electrical Circuit Issue
• Avoid using high-demand electrical accessories until fixed
• Get the vehicle inspected by a professional
• Monitor fuel efficiency and performance
Check if the vehicle is still under warranty for electrical components.
This code is relatively uncommon and often related to specific vehicle models with VVL systems.
Moderate – Should be addressed to prevent further electrical issues.
Driving with this code may lead to decreased performance and efficiency, but it is not immediately dangerous.
• Engine running
• Electrical load present
The VVL load shedding relay is typically located in the engine compartment fuse box.
Q: Can I drive with a P101D code?
A: Yes, but it's best to get it checked soon to avoid potential battery drain or performance issues.
Q: What happens if I ignore this code?
A: Ignoring it might lead to reduced fuel efficiency and possible battery issues.
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