P0702

Transmission Control System Electrical

Q: Is it safe to drive with P0702?

Short, slow trips may be fine, but limp mode and harsh shifts can strain the transmission. Have it diagnosed before extended driving.

Q: Can I just clear P0702?

It clears, but returns once the electrical fault recurs, and it can put the transmission back into limp mode. Repair the wiring or component first.

Transmission Generic OBD-II High

What it means

P0702 means the transmission control system has detected an electrical fault somewhere in its circuits — wiring, a solenoid, a sensor, or the control module. In response the transmission often shifts harshly or drops into a limp mode that locks it in one gear to protect itself. It is an electrical/control fault rather than a sign the engine won't run, and companion codes usually help pinpoint the exact circuit.

High

Can I keep driving? The transmission may shift harshly, drop into limp mode, or lock in one gear — driveable slowly, but get it looked at before a long trip.

Real-world scan data

Seen in

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on (sometimes a transmission warning light)
Harsh, delayed, or erratic shifting
Transmission stuck in one gear (limp mode)
Other transmission electrical codes stored alongside this one

Common causes

Most likely first

Damaged wiring or corroded connectors in the transmission control circuitLikely
Faulty shift solenoid or its wiringCommon
Failed transmission range sensorCommon
Failed transmission control module (TCM)Less often

How to diagnose & fix

Work through it in order

Scan and record all transmission codes and freeze-frame data to narrow down the affected circuit.
Inspect the transmission harness and connectors — including the main case connector — for damage, corrosion, or loose pins.
Check the TCM's power and ground feeds before condemning it.
Test the solenoids and range sensor per the circuit indicated; repair wiring or replace the failed component, then clear and re-test.

FAQ

Quick answers

Is it safe to drive with P0702?+

Short, slow trips may be fine, but limp mode and harsh shifts can strain the transmission. Have it diagnosed before extended driving.

Can I just clear P0702?+

It clears, but returns once the electrical fault recurs, and it can put the transmission back into limp mode. Repair the wiring or component first.

Read & clear P0702 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX