P0706 OBD Error Code: Problem & Solutions

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Want to crack the OBD error code P0706? Well, here’s how you can diagnose the error code P0706. This generic powertrain code P0706 is associated to the transmission and is non-emission related. The code is stored when the engine control module (ECM) fails to receive the correct data from the transmission sensor i.e. the transmission range sensor transmits the incorrect data. This code is strictly valid to vehicles that have an automatic transmission.

It should be noted that a transmission range sensor is also referred as a park/neutral switch or safety switch. Attached to the manual valve of the transmission, the sensor constantly communicates with the vehicle’s transmission control module and the ECM. The transmission range switch performs the task of detecting the selector lever position whether it is in park or neutral and further transmits the signal to the transmission control module. All this is done to make sure that the vehicle starts in the park and neutral position.

When the transmission does not receive clear data from the transmission range sensor, the code P0706 is stored. Most of the times, when the vehicle is in motion and registers that it is travelling at a speed that fails to match what the ECM sees as the current shift position (like travelling at any speed even when the transmission is reporting it is still in park or neutral).

What causes this problem with the Transmission Range Sensor A Circuit Range/Performance?

• A dirty or an inferior quality transmission fluid
• Distorted park/neutral position switch
• Defective or misadjusted park/neutral position switch
• A transmission range sensor that is damaged
• Wirings to the transmission range sensor short circuited or damaged
• A distorted valve body
• Defective manual shift valve linkage
• Park/neutral position switch harness open or short circuited
• A poor electrical connection to the park/neutral position switch circuit
• Faulty control cable
• In a rare case, a faulty ECM

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2. Transmission Fluid - Dirty or inferior quality transmission fluid is hazardous. It should be replaced immediately in order to overcome the complications caused by the error code P0706.
3. Park Neutral Switch - A defective or a misadjusted park neutral switch can be an essential reason triggering the error code P0706. Replace or repair now. We are just a click away!
4. Transmission Range Sensor - Facing the error code P0706? An inferior quality transmission range sensor can always be hazardous for the system also it is one of the primal causes behind the occurrence of the error code P0706. Tune into Parts Avatar for supreme quality transmission range sensor at economical prices.
5. Powertrain Control Module - abbreviated PCM; this is an integral control unit. So, a defective one should be changed immediately.
6. Engine Control Module - A distorted engine control module can end up being the chief host inviting the Error Code P0706. So, replacing one can be one of the wisest decisions to avoid a problematic system.
7. Automatic Transmission Module - Having problems with the automatic transmission module? Don’t you worry, Parts Avatar has it all. A faulty automatic transmission module could end up being the root cause behind the Error code P0706.

Curious to know the symptoms to the OBD code P0706? If yes, then you have arrived at the right place. We at Parts Avatar have listed out few common symptoms associated with Transmission Range Sensor A Circuit Range/Performance.

Common Symptoms

• An illuminated check engine or warning light
• Bad shifting
• Fall in acceleration
• Unable to switch gears
• Decreasing or bad fuel efficiency
• The vehicle might enter the “limp” mode

Have a look at some ways with which you can correct the P0706 code:

• The transmission fluid should be flushed and filled if required
• Any distorted or faulty wiring and connectors should be repaired or replaced
• The battery voltage levels should be checked
• Any damaged circuits or connectors should be repaired or replaced
• All the defective transmission range sensors should be restored or repaired
• Amendments should be made to fix the damaged ECM (rare)
• All the codes should be cleared, the vehicle should be test driven, and rescanned to see if any codes are stored again

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Here listed are some steps which you should follow in order to diagnose this P0706 fault code:

• An OBD-II scanner should be used to verify a stored P0706 trouble code
• A visual inspection should be performed of the range sensor and wiring harness for any signs of damage
• Next, visually inspect all wires and connectors linked to the transmission range sensor and ECM for any defects
• Make sure whether if the vehicle will start while in the reverse shift position or drive shift position
• The codes should be cleared, the vehicle should be test driven to see if code appears again
• The circuits continuity and resistance should be checked too

Common Mistakes When Diagnosing the P0706 Code

Want to diagnose the error code accurately? Well, we have listed here a few general mistakes that should be avoided

The most basic mistake committed while diagnosing this code occurs from a failure to follow the OBD-II trouble code protocol. It is highly essential for the technicians to always abide by the protocol in step-by-step order to avoid faulty repairs and ensure a precise investigation. Most of the times the PCMs are replaced without first checking to see if they merely require reprogramming.