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Code P086E

Quick reference

P086E at a glance

Plain-language meaning
This code means that the car's computer is having trouble getting a clear signal from the sensor that tells it when the car is in neutral. It's like when a video game controller has a loose wire and sometimes doesn't work right.
Urgency
Moderate – Addressing this issue promptly can prevent further transmission problems.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Wrench set

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

Laymans terms

This code means that the car's computer is having trouble getting a clear signal from the sensor that tells it when the car is in neutral. It's like when a video game controller has a loose wire and sometimes doesn't work right.

Explanation

The P086E code indicates that the transmission control module (TCM) has detected an intermittent or erratic signal from the neutral position sensor.

Technical description

The neutral position sensor, also known as the park/neutral position switch, provides information to the TCM about the gear position. When the signal from this sensor is inconsistent or erratic, it can cause the TCM to register a P086E fault code.

Symptoms

• Check Engine Light is on

• Transmission may not shift properly

• Vehicle may not start in neutral or park

Common Causes

• Faulty neutral position sensor

• Wiring issues such as frayed wires or poor connections

• Faulty transmission control module (TCM)

Glossary

TCM: Transmission Control Module

OBD-II: On-Board Diagnostics II

Diagnosis steps

• Use an OBD-II scanner to confirm the code.

• Inspect the wiring and connectors for damage or corrosion.

• Test the neutral position sensor for proper operation.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the neutral position sensor if faulty.

• Reprogram or replace the TCM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Wrench set

Estimated repair cost

$150 - $400

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regularly inspect wiring for damage.

• Keep connectors clean and free of corrosion.

• Ensure proper maintenance of the transmission system.

Error code type

Sensor Issue

User experience recommendations

• Avoid driving the vehicle until repaired to prevent transmission damage.

• Consult a professional mechanic for a proper diagnosis.

Warranty information

Check if the vehicle's powertrain warranty covers sensor issues.

Historical data

This code has been associated with vehicles experiencing intermittent transmission issues, often due to wiring problems.

Urgency level

Moderate – Addressing this issue promptly can prevent further transmission problems.

Testing conditions

• Vehicle in neutral or park

• Engine running

Component location

The neutral position sensor is typically located on the transmission housing.

FAQs

Q: Can I drive with a P086E code?
A: It's not recommended to drive with this code as it may lead to transmission issues.

Q: How do I clear a P086E code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue is fixed, it should not return.

Optional diagnostic gear

Tools that may help diagnose P086E

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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