ezOBD2 - Free OBD2 Code Lookup and Check Engine Light Diagnostic Tool

Find Your OBD2 Code Fast

Type the code from your scanner to get causes, symptoms, and fixes.

Code P11DE

Quick reference

P11DE at a glance

Plain-language meaning
The car's computer thinks the temperature sensor in the fuel tank is saying it's way too hot, which doesn't make sense.
Urgency
Moderate – It is advisable to address this issue promptly to avoid potential fuel system problems.
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

The car's computer thinks the temperature sensor in the fuel tank is saying it's way too hot, which doesn't make sense.

Explanation

The vehicle's onboard diagnostics system has detected an unusually high temperature reading from the fuel tank pressure/temperature sensor, which is not expected under normal conditions.

Technical description

The P11DE code indicates that the Engine Control Module (ECM) has received a signal from the fuel tank pressure/temperature sensor that is beyond the expected range, suggesting an implausibly high temperature. This could be due to a sensor malfunction, wiring issues, or a problem with the ECM itself.

Symptoms

• Check Engine Light is on

• Possible fuel odor

• Potential decrease in fuel efficiency

Common Causes

• Faulty fuel tank pressure/temperature sensor

• Wiring issues such as short circuits or open circuits

• Faulty ECM

Glossary

ECM: Engine Control Module

OBD-II: On-Board Diagnostics, second generation

Diagnosis steps

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

• Inspect the fuel tank pressure/temperature sensor and its wiring for damage.

• Test the sensor's resistance and voltage output to ensure it is within specifications.

Repair procedures

• Replace the faulty fuel tank pressure/temperature sensor.

• Repair or replace damaged wiring or connectors.

• Reprogram or replace the ECM if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Basic hand tools

Estimated repair cost

$150 - $400

Difficulty level

Moderate

Commonly affected vehicles

• Chevrolet Silverado

• Ford F-150

• Toyota Camry

Preventive measures

• Regularly inspect and maintain the fuel system.

• Ensure proper electrical connections.

• Avoid overfilling the fuel tank.

Error code type

Sensor Issue

User experience recommendations

• Do not ignore the Check Engine Light.

• Have the vehicle inspected by a professional if you notice a fuel smell.

• Monitor fuel efficiency and performance.

Warranty information

Check with your vehicle manufacturer for warranty coverage on emission-related components.

Historical data

This code is relatively uncommon and often related to sensor or wiring issues.

Urgency level

Moderate – It is advisable to address this issue promptly to avoid potential fuel system problems.

Testing conditions

• Vehicle at operating temperature

• Fuel tank at least 1/4 full

Component location

The fuel tank pressure/temperature sensor is typically located on or near the fuel tank.

FAQs

Q: Can I drive with a P11DE code?
A: While the car may still be drivable, it is recommended to address the issue to avoid potential safety and efficiency problems.

Q: How do I reset the Check Engine Light after repairs?
A: Use an OBD-II scanner to clear the code after ensuring the issue is resolved.

Optional diagnostic gear

Tools that may help diagnose P11DE

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
🌙