Having a P2702 DTC means that this computer has noticed an issue between the input speed sensor data and the output speed sensor data. What that means is, the transmission is most likely going to slip or have a problem changing gears.
What Transmission Do I Have?
How Serious is the Code?
A P2702 OBDII diagnostic trouble code is pretty serious, because it could indicate a serious transmission problem. This can cause the computer to command the transmission into what is known as ‘limp mode’, where it stays in a single forward gear to preserve the internal components. Not only is this annoying, but if the transmission pump has gone bad, you could be looking at a pretty hefty repair bill.
Symptoms
Symptoms of a P2702 include:
- Harsh shifts
- Slipping between gears
- Failure to shift
- Limp mode
Causes
- Low transmission fluid
- Dirty transmission fluid/filter
- Damage to wiring or connectors
- Overheating the transmission
- Failed TCM
- Failed input speed sensor
- Failed outputs speed sensor
- Failed transmission pump
How to Diagnose the Code?
The condition and level of the transmission fluid is an extremely important thing to consider when diagnosing a P2702 diagnostic trouble code. Metallic fragments can indicate a much more serious problem, which can obviously cause this code. The wiring and connectors should also be carefully examined for signs of damage or corrosion. If no issues have been found, then the input speed sensor, output speed sensor and transmission pump should all be considered.
What Transmission Do I Have?
What Repairs Will Fix P2702?
- Change the transmission fluid/filter
- Repair transmission fluid leaks
- Repair damage wiring/connectors
- Install new transmission pump
- Install new TCM
- Install new output speed sensor/input speed sensor
- Install remanufactured transmission
Related Codes
P2700 – Transmission Friction Element A Apply Time Range/Performance
P2701 – Transmission Friction Element B Apply Time Range/Performance
P2703 – Transmission Friction Element D Apply Time Range/Performance
P2704 – Transmission Friction Element E Apply Time Range/Performance
P2705 – Transmission Friction Element F Apply Time Range/Performance
