P3065moderate severityPowertrain
Transmission Adaptive Shift Strategy Malfunction
on 2005 Acura TSX 2.4L I4 · FWD
What this code means
The transmission adaptive shift learning system has detected conflicting or unreliable data, preventing it from properly adapting shift points and quality.
Symptoms
- Check Engine Light
- Inconsistent shift quality
- Shifts seem random in timing
- Transmission hunting between gears
- Shift firmness varies unpredictably
- Fuel economy fluctuating
Common causes
- TCM memory corruption
- Conflicting sensor inputs
- Throttle position sensor drift
- Vehicle speed sensor noise
- Recent battery disconnect without relearn
Diagnostic steps
- Read adaptive shift tables in TCM
- Reset transmission adaptive learning
- Monitor shift quality parameters
- Check throttle and speed sensor accuracy
- Perform transmission relearn drive cycle
Repair notes
Reset adaptive learning and perform drive cycle relearn. If the issue returns, investigate sensor accuracy. TCM replacement if memory is corrupted.
Other Powertrain codes on this vehicle
P0001
Fuel Volume Regulator Control Circuit/Open
P0002
Fuel Volume Regulator Control Circuit Range/Performance
P0003
Fuel Volume Regulator Control Circuit Low
P0004
Fuel Volume Regulator Control Circuit High
P0010
Intake Camshaft Position Actuator Circuit/Open Bank 1
P0011
Intake Camshaft Position Timing Over-Advanced Bank 1
P0012
Intake Camshaft Position Timing Over-Retarded Bank 1
P0013
Exhaust Camshaft Position Actuator Circuit/Open Bank 1
P0014
Exhaust Camshaft Position Timing Over-Advanced Bank 1
P0015
Exhaust Camshaft Position Timing Over-Retarded Bank 1