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Code P1487

Quick reference

P1487 at a glance

Plain-language meaning
This code means that a part inside the car's computer got too hot. It's like when a computer gets too hot and stops working properly.
Urgency
Moderate – Address the issue soon to prevent potential engine damage.
Difficulty
Moderate
System
Engine Performance
Tools mentioned
OBD-II scanner, Multimeter, Thermal imaging camera

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

Laymans terms

This code means that a part inside the car's computer got too hot. It's like when a computer gets too hot and stops working properly.

Explanation

The vehicle's control module has detected an over-temperature condition in the Variable Valve Lift (VVL) relay output stage.

Technical description

P1487 indicates that the internal control module has detected an over-temperature condition in the VVL relay output stage. This could be due to excessive current flow or a malfunction within the relay or its associated circuitry, causing the module to overheat and potentially fail.

Symptoms

• Check Engine Light is on

• Engine performance issues

• Possible engine stalling

Common Causes

• Faulty VVL relay

• Wiring issues such as shorts or opens

• Defective control module

Glossary

VVL: Variable Valve Lift

Relay: An electrically operated switch

Diagnosis steps

• Check for any other related codes.

• Inspect the VVL relay and associated wiring for damage.

• Test the control module for overheating issues.

Repair procedures

• Replace faulty VVL relay.

• Repair or replace damaged wiring.

• Replace the control module if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Thermal imaging camera

Estimated repair cost

$150 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Vehicle 1

• Vehicle 2

• Vehicle 3

Preventive measures

• Regular maintenance checks

• Ensure proper cooling system function

• Avoid excessive idling

Error code type

Engine Performance

User experience recommendations

• Avoid driving long distances until fixed.

• Monitor engine temperature closely.

Warranty information

Check with the vehicle manufacturer for warranty coverage on control module components.

Historical data

This code has been associated with vehicles that have had issues with overheating control modules due to relay faults.

Urgency level

Moderate – Address the issue soon to prevent potential engine damage.

Testing conditions

• Engine at operating temperature

• Vehicle in idle and under load conditions

Component location

The VVL relay is typically located in the engine compartment, near the control module.

FAQs

Q: Can I drive with a P1487 code?
A: It's not recommended as it may lead to further engine damage.

Q: What happens if I ignore this code?
A: Ignoring the code can lead to engine performance issues and potential damage.

Optional diagnostic gear

Tools that may help diagnose P1487

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.

View on Amazon
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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