PowertrainWarning

P0702: Transmission Control System Electrical

Q: Could failed sensor or actuator cause P0702?

Yes — Failed sensor or actuator is one of the common causes of P0702 (Transmission Control System Electrical). A scan-tool freeze-frame and circuit check will confirm whether this is the root cause for your vehicle.

Q: Could damaged wiring or connector cause P0702?

Yes — Damaged wiring or connector is one of the common causes of P0702 (Transmission Control System Electrical). A scan-tool freeze-frame and circuit check will confirm whether this is the root cause for your vehicle.

Q: Could open or short in the control circuit cause P0702?

Yes — Open or short in the control circuit is one of the common causes of P0702 (Transmission Control System Electrical). A scan-tool freeze-frame and circuit check will confirm whether this is the root cause for your vehicle.

Q: Could failed control module (rare) cause P0702?

Yes — Failed control module (rare) is one of the common causes of P0702 (Transmission Control System Electrical). A scan-tool freeze-frame and circuit check will confirm whether this is the root cause for your vehicle.

P0702 indicates a fault detected by the engine computer (ECM/PCM) in the engine or emissions system: Transmission Control System Electrical. A scan-tool freeze-frame and a circuit check are the right first steps before replacing any parts.

Can I keep driving?

Generally safe to keep driving — fix when convenient.

DIY difficulty

moderate

DIY possible with a scan tool and intermediate skills.

Typical cost (Canada)

Varies — get a quote

Parts + labor; varies by shop & vehicle.

Common causes

What usually triggers P0702?

1Failed sensor or actuator
2Damaged wiring or connector
3Open or short in the control circuit
4Failed control module (rare)

Causes are listed roughly in order of how often they're seen on Canadian independent-shop tickets. Always confirm with a scan-tool freeze-frame and a circuit/sensor check before replacing parts.

Related codes

Other P07xx codes

P0700

Transmission Control System Malfunction

P0701

Transmission Control System Range/Performance

P0705

Transmission Range Sensor Circuit Malfunction (PRNDL Input)

P0706

Transmission Range Sensor Circuit Range/Performance

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