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Code P2814

Quick reference

P2814 at a glance

Plain-language meaning
This code means that a part in the car's transmission, like a switch, isn't getting enough power to work properly. It's like a toy that needs batteries, but the batteries are running low.
Urgency
Moderate – Should be addressed soon to avoid transmission damage.
Difficulty
Moderate
System
Transmission Issue
Tools mentioned
OBD-II scanner, Multimeter, Wiring diagram

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

Laymans terms

This code means that a part in the car's transmission, like a switch, isn't getting enough power to work properly. It's like a toy that needs batteries, but the batteries are running low.

Explanation

The P2814 code is triggered when the transmission control module (TCM) detects a low electrical signal in the pressure control solenoid G circuit.

Technical description

The pressure control solenoid is responsible for regulating the hydraulic pressure in the transmission. When the TCM detects that the voltage in the control circuit for solenoid G is below the expected range, it sets the P2814 code. This could be due to an electrical issue such as a short circuit, open circuit, or a faulty solenoid.

Symptoms

• Transmission slipping

• Harsh or delayed shifting

• Check Engine Light illuminated

• Poor fuel economy

Common Causes

• Faulty pressure control solenoid G

• Open or shorted wiring in the solenoid circuit

• Poor electrical connection in the solenoid circuit

• Faulty transmission control module (TCM)

Glossary

TCM: Transmission Control Module

OBD-II: On-Board Diagnostics, Second Generation

Diagnosis steps

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

• Inspect the wiring and connectors for damage or corrosion.

• Test the pressure control solenoid G for proper operation.

• Check the TCM for any faults.

Repair procedures

• Replace or repair the faulty pressure control solenoid G.

• Repair or replace damaged wiring or connectors.

• Reprogram or replace the TCM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Wiring diagram

Estimated repair cost

$200 - $600

Difficulty level

Moderate

Commonly affected vehicles

• Toyota Camry

• Honda Accord

• Ford Fusion

Preventive measures

• Regular transmission fluid changes

• Routine inspection of transmission wiring

• Avoid harsh driving conditions

Error code type

Transmission Issue

User experience recommendations

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

• Consult a professional mechanic for an accurate diagnosis.

Warranty information

Check with the vehicle manufacturer for transmission warranty coverage.

Historical data

This code has been known to appear in vehicles with high mileage or poor maintenance history.

Urgency level

Moderate – Should be addressed soon to avoid transmission damage.

Testing conditions

• Vehicle at operating temperature

• Transmission in drive

Component location

The pressure control solenoid is located inside the transmission, usually accessible by removing the transmission pan.

FAQs

Q: Can I drive with a P2814 code?
A: It's not recommended to drive with this code as it can lead to further transmission damage.

Q: How do I clear the P2814 code?
A: The code can be cleared with an OBD-II scanner after the issue is fixed, but it will return if the problem persists.

Optional diagnostic gear

Tools that may help diagnose P2814

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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