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Code P27EE

Quick reference

P27EE at a glance

Plain-language meaning
This code means that the car's computer has detected a problem with the sensor that tells it what gear the car is in. It's like the car is confused about whether it's in park, drive, or reverse.
Urgency
Moderate – While the vehicle may still operate, incorrect gear information can lead to unsafe driving conditions.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools

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

Laymans terms

This code means that the car's computer has detected a problem with the sensor that tells it what gear the car is in. It's like the car is confused about whether it's in park, drive, or reverse.

Explanation

The Transmission Range Control A Position Sensor/Switch Circuit High code indicates that the voltage signal from the transmission range sensor is higher than expected, which can affect the vehicle's ability to determine the correct gear position.

Technical description

The P27EE code is triggered when the powertrain control module (PCM) detects a high voltage signal from the transmission range control A position sensor or switch. This sensor is responsible for communicating the current gear position to the PCM. A high circuit signal could be due to a wiring issue, a faulty sensor, or a problem with the PCM.

Symptoms

• Check Engine Light is on

• Transmission may not shift properly

• Vehicle may not start or may start in the wrong gear

Common Causes

• Faulty transmission range sensor

• Wiring issues such as open or short circuits

• Faulty PCM (Powertrain Control Module)

Glossary

PCM: Powertrain Control Module, the computer that controls engine and transmission functions.

OBD-II: On-Board Diagnostics, a standardized system for self-diagnosing vehicle issues.

Diagnosis steps

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

• Inspect the wiring and connectors related to the transmission range sensor.

• Test the transmission range sensor for proper operation.

Repair procedures

• Repair or replace damaged wiring or connectors.

• Replace the faulty transmission range sensor.

• Reprogram or replace the PCM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $400

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regularly inspect and maintain transmission components.

• Ensure proper electrical connections and wiring integrity.

• Use quality replacement parts.

Error code type

Sensor Issue

User experience recommendations

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

• Consult with a professional mechanic for an accurate diagnosis.

Warranty information

Check with your vehicle manufacturer for specific warranty coverage related to transmission components.

Historical data

This code has been associated with issues in vehicles with automatic transmissions, particularly in models with complex electronic control systems.

Urgency level

Moderate – While the vehicle may still operate, incorrect gear information can lead to unsafe driving conditions.

Testing conditions

• Vehicle in park or neutral

• Engine running

Component location

The transmission range sensor is typically located on the transmission housing or near the gear shift mechanism.

FAQs

Q: Can I drive with the P27EE code?
A: It's not recommended to drive with this code as it can lead to unsafe driving conditions.

Q: How do I reset the P27EE code?
A: After repairs, use an OBD-II scanner to clear the code. If the issue persists, further diagnosis is needed.

Optional diagnostic gear

Tools that may help diagnose P27EE

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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