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P0729 Engine Code Repair

Meaning of P0729 engine trouble code is a kind of powertrain trouble code and P0729 code can be about replacing a broken oxygen sensor can eventually lead to a busted catalytic convertor which can cost upwards of $2,200. Taking your car into a shop will cost you around $210 depending on the car. However, an oxygen sensor is easy to replace on many cars and is usually detailed in the owner's manual. If you know where the sensor is, you only have to unclip the old sensor and replace it with a new one. Regardless of how you approach it, you should get this fixed right away.

P0729 Fault Symptoms :

  1. Check engine light comes on
  2. Engine stalling or misfiring
  3. Engine performance issues
  4. Car not starting

If one of these reasons for P0729 code is occuring now you should check P0729 repair processes.
Now don't ask yourself; What should you do with P0729 code ?
The solution is here :

P0729 Possible Solution:

P0729 Engine

Air Conditioning Pressure Sensor (ACP) Insufficient Pressure Change Each time the A/C clutch engages, the PCM is looking for a pressure change in the refrigerant. If the change in pressure is outside of the calibration the DTC will set. A/C system mechanical failure Open ACP or VREF circuit A/C sensor damaged A/C system electrical failure A/C clutch always engaged Verify A/C system function, including refrigerant charge.

P0729 Code Meaning :

P
OBD-II Diagnostic Powertrain (P) Trouble Code For Engine

0
Intake Valve Control Solenoid Circuit Low

7
Fuel Temperature Sensor B Circuit Range/Performance

2
Engine Shutoff Solenoid Malfunction

9
Clutch Position Sensor Circuit Malfunction

The catalytic converter has an oxygen sensor in front and behind it. When the vehicle is warm and running in closed loop mode, the upstream oxygen sensor waveform reading should fluctuate.

P0729 OBD-II Diagnostic Powertrain (P) Trouble Code Description

P0729 OBD-II Trouble Code This malfunction is detected when the A/T does not shift into 6GR position as instructed by TCM. This is not only caused by electrical malfunction (circuits open or shorted) but by mechanical malfunct P0729 code.

Main reason For P0729 Code

The reason of P0729 OBD-II Engine Trouble Code is Fuel Temperature Sensor B Circuit Range/Performance.

P0729 code on vehicles with electronically controlled automatic transmissions, the 3-4 shift solenoid is responsible for actuating the hydraulic circuits to activate clutches or bands that change gears inside the automatic transmission.