P0736 — Gear 5 Incorrect Ratio
Drivable short-term, but fix now to avoid damage.
What P0736 means
This code means the actual gear ratio in fifth gear doesn't match what the transmission computer expects, typically a sign of slipping. Common causes are low or degraded fluid, worn clutches or bands, or a faulty solenoid. Diagnosing it early can sometimes limit the fix to a fluid service or solenoid instead of a costly rebuild.
Common symptoms
- Check engine light is on
- Transmission slips in fifth gear
- High engine RPM at cruising speed
- Harsh or delayed shifting
- Reduced fuel efficiency
Common causes
- Low or degraded transmission fluid
- Worn clutches or bands
- Faulty shift solenoid
- Valve body problems
- Internal mechanical wear in the transmission
Typical repair cost
$200 – $2500
Varies by vehicle and root cause.
Frequently asked questions
Can I keep driving with a P0736 code?
Short trips are usually fine, but slipping in fifth gear builds heat and can worsen damage at highway speeds, so limit driving and get it diagnosed soon.
How much does it cost to fix a P0736 code?
A fluid service or solenoid replacement may cost $200 to $600, while internal clutch or band repairs can reach $1,500 to $2,500 or more depending on the transmission.
Is a P0736 code serious?
Yes, it indicates slipping in fifth gear, your highway cruising gear, and ignoring it can lead to expensive transmission damage over time.
Why does the engine rev high with a P0736 code?
When fifth gear slips, the transmission can't hold the engine at the right speed for cruising, so RPMs climb higher than normal until the problem is repaired.