AutoCodes – Hyundai – P0068 Hyundai

P0068 Hyundai Code - MAP(MAF)-Throttle Position Sensor Correlation

Quick Answer

The Throttle Position Sensor (TPS) is mounted on the throttle body and detects the opening angle of the throttle plate. Common causes include Faulty Mass Air Flow (MAF) sensor, Large vacuum leak, Leaking air duct system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0068 Hyundai indicates MAP(MAF)-Throttle Position Sensor Correlation.
Common causes: Common causes include Faulty Mass Air Flow (MAF) sensor, Large vacuum leak, Leaking air duct system.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 32,560

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 12, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0068 Hyundai Description

The Throttle Position Sensor (TPS) is mounted on the throttle body and detects the opening angle of the throttle plate. The TPS has a variable resistor (potentiometer) whose characteristic is the resistance changing according to the throttle angle. During acceleration, the TPS resistance between the reference 5V and the signal terminal decreases, and output voltage increases; during deceleration, the TPS resistance increases and TPS output voltage decreases. The ECM supplies a reference 5V to the TPS and the output voltage increases directly with the opening of the throttle valve. The TPS output voltage will vary from 0.2~0.8V at closed throttle to 4.3~4.8V at wide-open throttle. The ECM determines operating conditions such as idle (closed throttle), part load, acceleration/deceleration, and wide-open throttle from the TPS. Also, The ECM uses the Mass Air Flow Sensor (MAFS) or Manifold Absolute Pressure Sensor (MAPS) signal along with the TPS signal to adjust fuel injection duration and ignition timing.

OBDII Code P0068 Hyundai - MAP(MAF)-Throttle Position Sensor Correlation - AutoCodes.com — P0068 Hyundai Code - MAP(MAF)-Throttle Position Sensor Correlation

What does this mean?

What are the Possible Causes of the DTC P0068 Hyundai?

Faulty Mass Air Flow (MAF) sensor
Large vacuum leak
Leaking air duct system
Mass Air Flow (MAF) poor electrical connection
Manifold Absolute Pressure (MAP) poor electrical connection
Faulty Manifold Absolute Pressure (MAP) sensor
TP sensor not seated properly
Faulty Throttle Position (TP) sensor

How to Fix the DTC P0068 Hyundai?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0068 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0068 Hyundai code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0068 Hyundai Code

What does the OBDII code P0068 mean on a Hyundai?

1. P0068 indicates a correlation issue between the throttle position sensor (TPS) and the manifold absolute pressure (MAP) or mass airflow (MAF) sensor readings, signaling that their values are inconsistent with each other. 2.

What are the common symptoms of code P0068 in a Hyundai?

Common symptoms include engine stalling, rough idling, poor acceleration, reduced fuel efficiency, and the activation of the check engine light. 3.

What causes the P0068 code to appear on a Hyundai?

Possible causes include a faulty throttle position sensor (TPS), a malfunctioning MAP or MAF sensor, a dirty or damaged throttle body, vacuum leaks, or wiring and connection issues. 4.

Can a dirty throttle body cause the P0068 code?

Yes, a dirty or clogged throttle body can disrupt airflow measurements and cause inconsistencies between the TPS and MAP/MAF sensor readings, triggering the P0068 code. 5.

How do you diagnose the P0068 code in a Hyundai?

Diagnosis involves scanning the vehicle with an OBDII tool, inspecting the TPS, MAP, and MAF sensors for faults, checking for vacuum leaks, and examining the throttle body for dirt or damage. 6.

Can a vacuum leak trigger the P0068 code?

Yes, a vacuum leak can alter pressure readings in the intake manifold, causing MAP sensor inconsistencies and triggering the P0068 code. 7.

How do you fix code P0068 on a Hyundai?

Repairs may include cleaning or replacing the throttle body, replacing a faulty TPS, MAP, or MAF sensor, fixing wiring or connection issues, and addressing any vacuum leaks. 8.

Is it safe to drive a Hyundai with the P0068 code?

Driving with the P0068 code is not recommended, as it can lead to poor engine performance, stalling, or further damage to engine components. 9.

Can a faulty mass airflow sensor (MAF) cause the P0068 code?

Yes, a malfunctioning MAF sensor can provide incorrect airflow data, leading to a mismatch with the TPS readings and triggering the P0068 code. 10.

Will clearing the P0068 code fix the problem permanently?

Clearing the code may temporarily turn off the check engine light, but the underlying issue must be diagnosed and repaired to prevent the code from returning.