P0702 — Transmission Control System Range/Performance
Drivable short-term, but fix now to avoid damage.
What P0702 means
This code means the computer detected that the transmission control system is operating outside its expected range or not performing correctly. It often points to electrical faults like wiring, connectors, or solenoids, but can also involve sensors, low fluid, or a control module problem. Repairs range from wiring and sensor fixes to more involved transmission service, depending on what the diagnosis reveals.
Common symptoms
- Check engine light is on
- Erratic, harsh, or delayed shifting
- Transmission slipping or hesitating
- Car enters limp mode or stays in one gear
- Reduced power or poor acceleration
Common causes
- Damaged wiring or connectors in the transmission circuit
- Faulty shift solenoid or transmission sensor
- Low, dirty, or degraded transmission fluid
- Failing transmission control module
- Internal transmission wear or mechanical fault
Typical repair cost
$150 – $1500
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0702 code?
Briefly and carefully, sometimes, but it's not advised. The transmission may shift poorly or enter limp mode, and continued driving can make things worse. Have it diagnosed as soon as possible.
How much does it cost to fix a P0702 code?
It varies with the cause. Wiring, sensor, or fluid repairs may run $150 to $400, while solenoid or control module work can reach $1,500 or more if deeper transmission repairs are required.
Is a P0702 code serious?
Yes, it's high priority. It affects how your transmission performs, which impacts both safety and repair costs if left unaddressed. Prompt diagnosis is the smart move.
What's the difference between P0702 and P0701?
Both are transmission control system codes. P0702 specifically flags a range or performance problem, often pointing toward an electrical fault, while P0701 is a more general malfunction. A scan tool helps a technician tell them apart.