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Code P288A

Quick reference

P288A at a glance

Plain-language meaning
This code means that the car's computer has detected a problem with the part that helps keep the car in park. It's like when a toy's switch gets stuck and doesn't work right.
Urgency
Moderate – This issue should be addressed soon to prevent potential transmission damage.
Difficulty
Moderate
System
Transmission Control System
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 part that helps keep the car in park. It's like when a toy's switch gets stuck and doesn't work right.

Explanation

The P288A code indicates that the voltage in the park lock/pawl actuator circuit is higher than expected, suggesting an electrical issue.

Technical description

The P288A code is triggered when the powertrain control module (PCM) detects a high voltage condition in the park lock/pawl actuator circuit. This actuator is responsible for engaging the parking pawl, which locks the transmission and prevents the vehicle from moving when parked.

Symptoms

• Vehicle not staying in park

• Warning light on dashboard

• Inability to shift out of park

Common Causes

• Faulty park lock/pawl actuator

• Wiring issues such as shorts or open circuits

• Faulty PCM

Glossary

PCM: Powertrain Control Module

Actuator: A device that causes a mechanism to operate

Diagnosis steps

• Check for other related codes

• Inspect wiring and connectors for damage

• Test the park lock/pawl actuator for proper operation

Repair procedures

• Repair or replace damaged wiring

• Replace faulty park lock/pawl actuator

• Reprogram or replace the PCM if necessary

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $500

Difficulty level

Moderate

Commonly affected vehicles

• Ford F-150

• Chevrolet Silverado

• Toyota Camry

Preventive measures

• Regular inspection of transmission components

• Ensure proper maintenance of electrical systems

• Avoid forcing the shifter

Error code type

Transmission Control System

User experience recommendations

• Do not force the gear shifter

• Have the vehicle inspected by a professional

• Avoid driving until the issue is resolved

Warranty information

Check with the vehicle manufacturer for warranty coverage on transmission components.

Historical data

The P288A code has been reported in vehicles with high mileage or those that frequently experience harsh driving conditions.

Urgency level

Moderate – This issue should be addressed soon to prevent potential transmission damage.

Testing conditions

• Vehicle in park

• Engine running

Component location

The park lock/pawl actuator is typically located within the transmission assembly.

FAQs

Q: Can I drive with a P288A code?
A: It's not recommended to drive with this code as it can lead to safety issues.

Q: How do I clear the P288A code?
A: Fix the underlying issue first, then use an OBD-II scanner to clear the code.

Optional diagnostic gear

Tools that may help diagnose P288A

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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