C2191 Code - Vehicle Speed Signal Error
Quick Answer
The Tire Pressure Warning ECU receives a speed signal from the combination meter. Common causes include Faulty Vehicle Speed Sensor, Vehicle Speed Sensor harness is open or shorted, Vehicle Speed Sensor circuit poor electrical connection. 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
- C2191 indicates Vehicle Speed Signal Error.
- Common causes
- Common causes include Faulty Vehicle Speed Sensor, Vehicle Speed Sensor harness is open or shorted, Vehicle Speed Sensor circuit poor electrical connection.
- 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 C2191 Description
What are the Possible Causes of the DTC C2191?
- Faulty Vehicle Speed Sensor
- Vehicle Speed Sensor harness is open or shorted
- Vehicle Speed Sensor circuit poor electrical connection
- Faulty Tire Pressure Warning ECU
How to Fix the DTC C2191?
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 C2191 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 C2191 code?
Need more information on how to fix the C2191 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C2191 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- C2191 Lexus — Vehicle Speed Signal Error
- C2191 Scion — Vehicle Speed Signal Error
- C2191 Toyota — Vehicle Speed Signal Error
Frequently Asked Questions about C2191 Code
1. What are the common symptoms of OBDII code C2191 (Vehicle Speed Signal Error)?
- Common symptoms include issues with the speedometer, cruise control malfunctions, and the vehicle going into limp mode.
2. What can cause the OBDII code C2191 to trigger?
- The code C2191 can be triggered by a faulty vehicle speed sensor, damaged wiring or connectors related to the speed sensor, or a malfunction in the ABS system.
3. How can I diagnose the cause of OBDII code C2191?
- Diagnosis typically involves checking the vehicle speed sensor for proper operation, inspecting the wiring and connectors for damage, and performing a scan of the ABS system for any related faults.
4. Can a vehicle speed sensor be repaired, or does it need to be replaced when dealing with code C2191?
- In most cases, a faulty vehicle speed sensor will need to be replaced to resolve code C2191, as repair options are limited for these sensors.
5. Are there any DIY repair tips for fixing OBDII code C2191?
- DIY repair tips include checking and cleaning connectors, inspecting wiring for damage, and ensuring the vehicle speed sensor is securely mounted and functioning correctly.
6. How serious is OBDII code C2191 (Vehicle Speed Signal Error)?
- Code C2191 should be addressed promptly as it can affect the vehicle's speed-related functions and safety systems, such as ABS and traction control.
7. Can code C2191 cause any other issues in the vehicle?
- Yes, unresolved code C2191 can lead to inaccurate speedometer readings, affecting fuel efficiency calculations, and potentially causing problems with the transmission shifting correctly.
8. Is it safe to drive with OBDII code C2191 present?
- It is not recommended to drive with code C2191 present, as it can impact the vehicle's speed-related functions and overall driving performance.
9. How much does it typically cost to repair OBDII code C2191?
- The cost of repairing OBDII code C2191 can vary depending on the cause of the issue, but it may range from $100 to $300 or more, including parts and labor.
10. Can clearing the OBDII code C2191 resolve the issue temporarily?
- Clearing the code may temporarily turn off the warning light, but if the underlying issue causing code C2191 is not fixed, the code is likely to reappear.
Discuss the causes and fixes for C2191 OBDII Code
Code C2191 comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
