P1921 Code - Transmission Range Signal
Quick Answer
P1921 indicates Transmission Range Signal. Common causes include Faulty Transmission Range Sensor, Transmission Range Sensor harness is open or shorted, Transmission Range 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
- P1921 indicates Transmission Range Signal.
- Common causes
- Common causes include Faulty Transmission Range Sensor, Transmission Range Sensor harness is open or shorted, Transmission Range 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 P1921 Description
What are the Possible Causes of the DTC P1921?
- Faulty Transmission Range Sensor
- Transmission Range Sensor harness is open or shorted
- Transmission Range Sensor circuit poor electrical connection
How to Fix the DTC P1921?
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 P1921 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 P1921 code?
Need more information on how to fix the P1921 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1921 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- P1921 Saab — CAN Data Bus ECM
Frequently Asked Questions about P1921 Code
1. What are the common symptoms of OBDII code P1921 (Transmission Range Signal)?
The common symptoms of code P1921 include difficulty shifting gears, erratic shifting behavior, and the transmission not engaging properly.
2. What are the possible causes of OBDII code P1921?
Possible causes of code P1921 include a faulty transmission range sensor, damaged wiring or connectors related to the sensor, or issues with the transmission control module.
3. How can I diagnose OBDII code P1921?
Diagnosing code P1921 involves using a scan tool to retrieve the code, checking the transmission range sensor for proper operation, inspecting the wiring and connectors for damage, and testing the transmission control module.
4. Can OBDII code P1921 be triggered by other issues besides the transmission range sensor?
Yes, code P1921 can also be triggered by issues such as a faulty transmission control module, damaged wiring, or poor connections related to the transmission range signal.
5. What are some repair tips for addressing OBDII code P1921?
Repair tips for code P1921 include checking and repairing any damaged wiring or connectors, replacing the transmission range sensor if necessary, and ensuring proper communication between the sensor and control module.
6. Is it safe to continue driving with OBDII code P1921 present?
It is not recommended to continue driving with code P1921 present, as it can lead to further transmission issues and potential safety hazards on the road.
7. How much does it typically cost to repair OBDII code P1921?
The cost of repairing code P1921 can vary depending on the underlying cause, but it may range from $100 to $500 for parts and labor.
8. Can I reset OBDII code P1921 myself, or do I need a professional to do it?
You can attempt to reset code P1921 yourself using an OBDII scanner, but it is important to address the root cause of the issue to prevent the code from reoccurring.
9. Will OBDII code P1921 cause my vehicle to fail an emissions test?
Yes, code P1921 can cause your vehicle to fail an emissions test, as it indicates a malfunction in the transmission range signal system.
10. How can I prevent OBDII code P1921 from occurring in the future?
To prevent code P1921 from occurring in the future, it is essential to perform regular maintenance on your vehicle, including checking the transmission range sensor, wiring, and connections for any signs of damage or wear.
Discuss the causes and fixes for P1921 OBDII Code
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Showing code P 1921 can't clear it with my computer.IY is power train or SRS code?
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The P1921 code means that there is a problem with the Transmission and is not related to the SRS system.
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It seems that the code P1921 is not recognized for your 2016 Hyundai Sonata. This could mean the code might be incorrect, or it could be a manufacturer-specific code that's not fully registered in the system.
Could you double-check the code, or alternatively provide more details like the VIN or a description of the issue you are experiencing? This would help me assist you better!
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