Is it safe to drive with a P0720 code?

Severity is medium. Address P0720 sooner rather than later — driving with an active check engine light can worsen the problem or void emissions warranties.

How much does it cost to fix P0720?

Repair costs for P0720 typically range from $80 to $400 in the US, depending on the underlying cause. The most common fix is: Failed output speed sensor.

What are the symptoms of P0720?

CEL. Erratic shifting. Speedometer may read incorrectly. Harsh engagement.

Check Engine Code

P0720

Output Speed Sensor Circuit Malfunction

Severity: medium DIY difficulty: 3/5 Typical cost: $80–$400

What P0720 means

The output shaft speed sensor tells the TCM how fast the transmission output is spinning. Without a good signal, shift quality goes to pieces.

Symptoms

CEL
Erratic shifting
Speedometer may read incorrectly
Harsh engagement

Likely causes (most common first)

Failed output speed sensor
Damaged wiring
Metal debris stuck to the sensor tip
Low transmission fluid

Can I keep driving?

Medium — drivable but fix soon

Typical repair cost

DIY fixes can start near $80 (parts only). Shop repairs for P0720 typically run up to $400 depending on the underlying cause and vehicle. Start with the most common cause — Failed output speed sensor — before throwing parts at it.

Related codes

P0700P0721P0722

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