What Does the P0706 Code Mean?
OBD-II Code P0706 is defined as a Transmission Range Sensor Circuit Range/Performance issue. The Transmission Range Sensor, also known as the PRNDL input or neutral safety switch, communicates the position of the transmission to the vehicle’s control modules, indicating whether it is in park, reverse, neutral, drive, and other gears.
What Causes the P0706 Code?
The P0706 code can be triggered by several factors, including:
- Defective Transmission Range Sensor (PRNDL input)
- Faulty wiring or connector related to the Transmission Range Sensor
- Defective Valve Body
- Issues with manual shift valve linkage
- Contaminated transmission fluid that blocks hydraulic passages
What Are the Symptoms of the P0706 Code?
Drivers experiencing the P0706 code may notice the following symptoms:
- Illumination of the Check Engine Light
- Improper shifting of the vehicle
- Inability to engage gears
- Decreased fuel economy
- In some cases, no noticeable symptoms
- Potential performance problems
How Serious Is the P0706 Code?
The P0706 code is classified as urgent, as it indicates a significant malfunction that could lead to severe vehicle damage or pose safety risks to the driver and passengers. Immediate attention is recommended to avoid further complications.
How to Diagnose the P0706 Code
Diagnosing the P0706 code involves a few key steps:
- Record the freeze frame data when the code is set.
- Perform a test drive, replicating the conditions under which the code appeared, typically at speeds of 15-35 mph.
- Monitor the scan data to determine if the Range Sensor is providing accurate information to the TCM and PCM.
- Conduct pinpoint tests such as voltage drop and continuity tests of the Transmission Range Sensor.
- Check the condition of the transmission fluid for cleanliness and proper color.
Common Repairs for the P0706 Code
Common repairs to address the P0706 code may include:
- Replacing the defective Transmission Range Sensor
- Repairing or replacing faulty wiring or connectors
- Fixing issues with the valve body or manual shift valve linkage
- Flushing or replacing contaminated transmission fluid
How Much Does It Cost to Fix the P0706 Code?
The cost to repair the P0706 code can vary widely depending on the specific issue and labor rates, but it typically ranges from $100 to $600. This includes diagnostic fees, parts replacement, and any additional repairs needed.
Can I Fix the P0706 Code Myself?
If you have experience with automotive repairs and access to the necessary tools, you may be able to address the P0706 code yourself. However, proper diagnosis is crucial, and if you are unfamiliar with the systems involved, it may be best to consult a professional mechanic to avoid further complications.
