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Code P140E

Quick reference

P140E at a glance

Plain-language meaning
Your car's computer is saying that the fuel level is too low, and it's stopping fuel from going to the engine to protect it.
Urgency
Moderate – Address as soon as possible to avoid engine performance issues.
Difficulty
Moderate
System
Engine Performance
Tools mentioned
OBD-II scanner, Multimeter, Basic hand tools

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

Laymans terms

Your car's computer is saying that the fuel level is too low, and it's stopping fuel from going to the engine to protect it.

Explanation

The engine control module (ECM) detects that the fuel level is too low and cuts off fuel injection to prevent engine damage.

Technical description

The P140E code is triggered when the ECM determines that the fuel level in the tank is critically low, which could lead to air entering the fuel system. To prevent potential damage from running the engine with insufficient fuel, the ECM initiates a cylinder injection cut-off strategy.

Symptoms

• Check Engine Light is on

• Engine may not start

• Poor engine performance

Common Causes

• Low fuel level in the tank

• Faulty fuel level sensor

• Wiring issues in the fuel level sensor circuit

Glossary

ECM: Engine Control Module

OBD-II: On-Board Diagnostics II

Diagnosis steps

• Check the fuel level in the tank.

• Inspect the fuel level sensor for proper operation.

• Examine wiring and connections related to the fuel level sensor.

Repair procedures

• Refill the fuel tank to an adequate level.

• Replace the faulty fuel level sensor if necessary.

• Repair or replace damaged wiring or connectors.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$50 - $200

Difficulty level

Moderate

Commonly affected vehicles

• Ford Focus

• Chevrolet Malibu

• Toyota Camry

Preventive measures

• Regularly check fuel levels.

• Maintain proper fuel system maintenance.

• Inspect fuel level sensor periodically.

Error code type

Engine Performance

User experience recommendations

• Keep your fuel tank above a quarter full.

• Regularly monitor the fuel gauge for accuracy.

Warranty information

Check with your vehicle manufacturer for warranty coverage on fuel system components.

Historical data

This code is commonly associated with low fuel levels and is designed to prevent engine damage.

Urgency level

Moderate – Address as soon as possible to avoid engine performance issues.

Testing conditions

• Vehicle at idle

• Fuel level below the threshold

Component location

The fuel level sensor is located in the fuel tank.

FAQs

Q: Can I drive with a P140E code?
A: It's not recommended, as it indicates low fuel which can cause engine damage.

Q: Will refilling the tank clear the code?
A: Refilling the tank may resolve the issue, but the code may need to be cleared with an OBD-II scanner.

Optional diagnostic gear

Tools that may help diagnose P140E

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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