just of recent my acura MDX 02 "D" drive indicator was flashing and at the same time i noticed hard shifting in gear selection as if gear seat is broken I check trans oil immediately and it was smelling burnt, i changed the oil immediately but problem persist, 5 days after i change oil it was smelling burnt again so i run a scan and these code came up Po780, P1751, po135. please what is wrong with my transmission. though the gear still drive and select. please help.

am I heading at transmission replacement?

Elsafema:
just of recent my acura MDX 02 "" drive indicator was flashing and at the same time i noticed hard shifting in gear selection as if gear seat is broken I check trans oil immediately and it was smelling burnt, i changed the oil immediately but problem persist, 5 days after i change oil it was smelling burnt again so i run a scan and these code came up Po780, P1751, po135. please what is wrong with my transmission. though the gear still drive and select. please help.

Possible causes
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shifting solenoid valve
- Shifting solenoid valve harness is open or shorted
- Shifting solenoid valve circuit poor electrical connection
What does this mean? What does this mean?
When is the code detected?
The P0780 codes is detected when no rotation change occurs between input (turbine revolution sensor) and output (revolution sensor) and shifting time is long or when shifting ends immediately or when engine revs up unusually during shifting.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Transmission shift shock
P0780 Acura Description
The Transmission Control Module (TCM) monitors the transmission mechanical shifting through various sensors. This malfunction is detected when the A/T does not shift as instructed by the TCM. This is not caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction such as control valve sticking,improper solenoid valve operation, etc.


Definition of Diagnostic Trouble Code P1751

Acura:
Mechanical Problem in Hydraulic Control System of Shift Solenoid Valve B and A/T Clutch Pressure Control Solenoid Valves A and B, or Problem in the Hydraulic Control System Comprehensive

Possible causes
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
What does this mean? What does this mean?
Tech notes
The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The control module monitors how long it take the sensor to warm up and start sending an adequate signal. The code is triggered when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the sensor and connector are OK, replacing the O2 Sensor 1 usually takes care of the problem
What does this mean? What does this mean?
When is the code detected?
Current amperage in the front heated oxygen sensor heater circuit is out of the normal range. (An improper voltage drop signal is sent to ECM through the front heated oxygen sensor heat
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible higher than usual fuel Consumption
P0135 Acura Description
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).

In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.

The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.


Am not a tech just help make some research about the codes

New transmission loading.

mayor2013:
New transmission loading.

waoo

princemillla:




Possible causes
- Low transmission fluid level
- Dirty transmission fluid
- Faulty shifting solenoid valve
- Shifting solenoid valve harness is open or shorted
- Shifting solenoid valve circuit poor electrical connection
What does this mean? What does this mean?
When is the code detected?
The P0780 codes is detected when no rotation change occurs between input (turbine revolution sensor) and output (revolution sensor) and shifting time is long or when shifting ends immediately or when engine revs up unusually during shifting.
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Transmission shift shock
P0780 Acura Description
The Transmission Control Module (TCM) monitors the transmission mechanical shifting through various sensors. This malfunction is detected when the A/T does not shift as instructed by the TCM. This is not caused by electrical malfunction (circuits open or shorted) but by mechanical malfunction such as control valve sticking,improper solenoid valve operation, etc.


Definition of Diagnostic Trouble Code P1751

Acura:
Mechanical Problem in Hydraulic Control System of Shift Solenoid Valve B and A/T Clutch Pressure Control Solenoid Valves A and B, or Problem in the Hydraulic Control System Comprehensive

Possible causes
- Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground
- Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection
- Faulty Engine Control Module (ECM)
What does this mean? What does this mean?
Tech notes
The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The control module monitors how long it take the sensor to warm up and start sending an adequate signal. The code is triggered when the sensor is taking too long to warm up. Water getting inside the heated oxygen sensor connector can caused the heated oxygen sensor fuse to blow. Before replacing the sensor, check for the condition of the heated oxygen sensor fuse and connectors. If the sensor and connector are OK, replacing the O2 Sensor 1 usually takes care of the problem
What does this mean? What does this mean?
When is the code detected?
Current amperage in the front heated oxygen sensor heater circuit is out of the normal range. (An improper voltage drop signal is sent to ECM through the front heated oxygen sensor heat
Possible symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
- Possible higher than usual fuel Consumption
P0135 Acura Description
Oxygen Sensors (O2S) or Heated Oxygen Sensors (HO2S) need to reach a minimum operating temperature of 750 degrees F to produce an accurate voltage signal. The faster the heated oxygen sensor reaches that temperature the faster the sensor will start sending an accurate signal to the Engine Control Module (ECM).

In order to achieve the require temperature, a heater element is included inside the heated oxygen sensor. The ECM controls the heated oxygen sensor heater element based on signals from the engine coolant temperature and engine load. The ECM controls the heater element circuit by allowing current flow to ground.

The ECM monitors the voltage signal received through the heater element circuit and determines the state of the circuit by comparing the voltage detected with the factory specifications.


Am not a tech just help make some research about the codes

Kindly summarize this instead of copy and paste

honmusa:


Am not a tech just help make some research about the codes

Read the Bolden.... I indicated that to distance myself from the race

how much is new MDX 02gear?

princemillla:


Read the Bolden.... I indicated that to distance myself from the race