B1749 Code - Park/Neutral Switch Circuit Failure
Quick Answer
The Body Control Module (BCM) monitors the Park/Neutral Switch. Common causes include Faulty Park/Neutral Switch, Park/Neutral Switch harness is open or shorted, Park/Neutral Switch 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
- B1749 indicates Park/Neutral Switch Circuit Failure.
- Common causes
- Common causes include Faulty Park/Neutral Switch, Park/Neutral Switch harness is open or shorted, Park/Neutral Switch 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 B1749 Description
What are the Possible Causes of the DTC B1749?
- Faulty Park/Neutral Switch
- Park/Neutral Switch harness is open or shorted
- Park/Neutral Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B1749?
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 B1749 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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Need Help with the Code?
Get the B1749 code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B1749 Code
What does the OBDII code B1749 indicate?
B1749 indicates a Park/Neutral Switch Circuit Failure, meaning there is a problem with the signal from the park/neutral switch to the vehicle's computer.
What are common symptoms of the B1749 code?
Common symptoms include the vehicle not starting, the transmission not shifting properly, or the check engine light being illuminated.
What could cause the B1749 code to trigger?
Causes may include a faulty park/neutral switch, damaged wiring or connectors, or issues with the vehicle's transmission control module.
How can I diagnose a B1749 code?
To diagnose this code, check the park/neutral switch for proper operation, inspect wiring and connectors for damage, and use a multimeter to test for continuity and voltage.
What are some common repair solutions for a B1749 code?
Common repairs include replacing the park/neutral switch, repairing or replacing damaged wiring, or reprogramming or replacing the transmission control module if necessary.
Can I drive my vehicle with a B1749 code?
It's not advisable to drive a vehicle with a B1749 code, as it may lead to transmission issues or prevent the vehicle from starting.
How do I reset the B1749 code after repairs?
You can reset the B1749 code by using an OBDII scanner to clear the trouble codes or by disconnecting the vehicle's battery for a few minutes.
Is the B1749 code more common in certain vehicles?
While the B1749 code can occur in any vehicle equipped with OBDII, it may be more prevalent in older models or those with known issues in the transmission system.
Can I fix a B1749 code myself?
If you have some automotive knowledge and tools, you may be able to diagnose and fix a B1749 code yourself, especially if it involves replacing the park/neutral switch or repairing wiring. However, if you're unsure, it's best to consult a professional.
Discuss the causes and fixes for B1749 OBDII Code
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