P1191 Hyundai Code - Electronic Throttle System Limp Home Valve On
Quick Answer
The Electronic Throttle System (ETS) consists of ETS unit, ETS-motor, Accelerator Position Sensor (APS),Throttle Position Sensor (TPS) and Limp home valve. Common causes include Faulty Electronic Throttle System (ETS) Motor, Faulty Electronic Throttle System (ETS), Electronic Throttle System(ETS)unit. 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
- P1191 Hyundai indicates Electronic Throttle System Limp Home Valve On.
- Common causes
- Common causes include Faulty Electronic Throttle System (ETS) Motor, Faulty Electronic Throttle System (ETS), Electronic Throttle System(ETS)unit.
- 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.
Code P1191 Hyundai Description
Among above-mentioned parts, Limp home valve is attached under the throttle body and helps air to flow from the outside through this valve to the engine combustion chamber to prevent the vehicle from engine stall when Powertrain Control Module (PCM) detects ETS system malfunction.
Electronic Throttle System (ETS) 2004 Hyundai Santa Fe
What are the Possible Causes of the DTC P1191 Hyundai?
- Faulty Electronic Throttle System (ETS) Motor
- Faulty Electronic Throttle System (ETS)
- Electronic Throttle System(ETS)unit
- Electronic Throttle System(ETS) harness is open or shorted
- Electronic Throttle System(ETS) circuit poor electrical connection
How to Fix the DTC P1191 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 P1191 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.
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Frequently Asked Questions about P1191 Hyundai Code
1. What does the OBDII code P1191 mean on a Hyundai?
P1191 indicates an issue with the Electronic Throttle System (ETS), specifically that the Limp Home Valve is active, which limits engine performance as a safety measure.
2. What are the common symptoms of code P1191 in a Hyundai?
Symptoms include reduced engine power, limited throttle response, the Check Engine Light turning on, and potentially the inability to accelerate beyond a certain speed.
3. What causes the P1191 code to appear in a Hyundai?
Common causes include a malfunctioning throttle body, a faulty throttle position sensor (TPS), wiring or connector issues, or an issue with the electronic control module (ECM).
4. Can I drive my Hyundai with the P1191 code active?
Driving with P1191 is possible but not recommended, as the vehicle is in limp mode with reduced performance. Continuing to drive without repairs may cause additional damage.
5. How is the P1191 code diagnosed on a Hyundai?
A mechanic will use an OBDII scanner to confirm the code, inspect the throttle body and sensors, check for damaged wiring or connectors, and test the ETS components.
6. How do you fix the P1191 code on a Hyundai?
Repairs may involve cleaning or replacing the throttle body, repairing or replacing damaged wiring, replacing the throttle position sensor, or addressing ECM issues.
7. Is a throttle body cleaning enough to fix code P1191?
In some cases, cleaning a dirty throttle body may resolve the issue, but if the components are damaged, replacement may be necessary.
8. How much does it cost to repair the P1191 code on a Hyundai?
Repair costs vary but typically range from $150 to $700, depending on whether cleaning, sensor replacement, or throttle body replacement is needed.
9. What happens if the P1191 code is ignored?
Ignoring the P1191 code can lead to persistent performance issues, increased wear on engine components, and potentially more costly repairs.
10. Does the P1191 code always indicate a throttle body failure?
No, it can also be caused by sensor issues, wiring problems, or ECM malfunctions. A thorough diagnosis is required to pinpoint the exact cause.
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