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Code P113D

Quick reference

P113D at a glance

Plain-language meaning
The car's computer thinks the temperature of the air going into the engine doesn't make sense. It's like if you wore a winter coat on a hot summer day; something just doesn't add up.
Urgency
Moderate – Should be addressed soon to prevent further engine performance issues.
Difficulty
Moderate
System
Sensor Issue
Tools mentioned
OBD-II scanner, Multimeter, Screwdriver set

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

Laymans terms

The car's computer thinks the temperature of the air going into the engine doesn't make sense. It's like if you wore a winter coat on a hot summer day; something just doesn't add up.

Explanation

The engine control module (ECM) is receiving a signal from the intake air temperature sensor that doesn't match expected values.

Technical description

The intake air temperature sensor measures the temperature of the air entering the engine. This information is used by the ECM to adjust the air-fuel mixture for optimal performance. If the sensor's readings are outside the expected range, the ECM will trigger a P113D code.

Symptoms

• Check Engine Light is on

• Poor fuel economy

• Rough idle

Common Causes

• Faulty intake air temperature sensor

• Wiring issues or poor connections

• ECM software issues

Glossary

ECM: Engine Control Module

OBD-II: On-Board Diagnostics II

Diagnosis steps

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

• Inspect the intake air temperature sensor and wiring for damage.

• Test the sensor's resistance with a multimeter.

Repair procedures

• Replace the intake air temperature sensor if faulty.

• Repair or replace damaged wiring or connectors.

• Update the ECM software if necessary.

Tools required

• OBD-II scanner

• Multimeter

• Screwdriver set

Estimated repair cost

$100 - $250

Difficulty level

Moderate

Commonly affected vehicles

• Volkswagen Jetta

• Audi A4

• Skoda Octavia

Preventive measures

• Regularly inspect sensors and wiring.

• Keep the engine bay clean to prevent debris buildup.

• Schedule regular vehicle maintenance.

Error code type

Sensor Issue

User experience recommendations

• Don't ignore the Check Engine Light.

• Have a professional diagnose the issue if you're unsure.

• Avoid driving long distances until the issue is resolved.

Warranty information

Check if the sensor is covered under the vehicle's emissions warranty.

Historical data

This code has been commonly reported in vehicles with aging sensors or wiring issues.

Urgency level

Moderate – Should be addressed soon to prevent further engine performance issues.

Testing conditions

• Engine at operating temperature

• Stable idle conditions

Component location

The intake air temperature sensor is typically located in the air intake duct near the air filter box.

FAQs

Q: Can I drive with a P113D code?
A: It's not recommended to drive for long periods as it can affect engine performance and efficiency.

Q: How do I reset the Check Engine Light after fixing the issue?
A: You can use an OBD-II scanner to clear the code after repairs are completed.

Optional diagnostic gear

Tools that may help diagnose P113D

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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