P0733 OBD-II Trouble Code: Gear 3 Incorrect Ratio

Our certified mechanics come to you · 12-month, 12,000-mile warranty

SCHEDULE P0733 DIAGNOSTIC Get a fair and transparent estimate upfront
Red-stars EXCELLENT RATING ON

Cost of diagnosing the P0733 code

P0733 is a diagnostic trouble code (DTC) for "Gear 3 Incorrect Ratio". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $20.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.

Cars Estimate Credit towards follow-up repair Earliest Availability
Ford$20.00
Toyota$20.00
BMW$20.00
SCHEDULE P0733 DIAGNOSTIC Get a fair and transparent estimate upfront

P0733 Code Definition

Gear 3 incorrect ratio is the technical definition of the P0733 trouble code

What the P0733 code means

The P0733 code means that the powertrain control module (PCM) has detected something unusual with the ratio of the third gear in the vehicle’s transmission. This will usually have to happen multiple times before a trouble code will be stored.

The powertrain control module uses the information it receives from multiple sensors that gather and calculate data, such as vehicle speed, throttle position, engine RPM, and other measures to determine which ratio a particular gear should have. If there is a difference between the desired gear ratio and the actual gear ratio (multiple times) a Check Engine Light will be illuminated.

What are the causes of the P0733 code?

Some of the potential causes of the P0733 code may include:

  • A faulty shift solenoid
  • A faulty powertrain control module
  • A faulty transmission module (if applicable)
  • Low transmission fluid
  • Skipping over transmission fluid maintenance
  • Debris inside transmission causing a restriction in the flow of transmission fluid
  • Internal transmission damage

What are the symptoms of the P0733 code?

Just about all possible negative symptoms a transmission can have are possible with this trouble code. Some of these symptoms you may see include:

  • Transmission slippage
  • Hard shifts
  • Transmission overheating
  • Transmission may not shift in or out of a particular gear

How does a mechanic diagnose the P0733 code?

The first thing a mechanic is likely to do when diagnosing a P0733 code would be to check the level and condition of the transmission fluid. If the transmission fluid is low or dirty, this could be the first sign of the problem, and the fluid should be replaced or topped off as necessary.

If the fluid level and condition are acceptable, the next thing the mechanic may do is perform a test drive to confirm the customer’s symptoms. The diagnosis of this code is likely to involve the complete teardown of the transmission, or at least the removal of the transmission pan. Some of the parts of the transmission that may need to be inspected or tested are not accessible without transmission disassembly.

Common mistakes when diagnosing the P0733 code

A mistake that could easily be made when diagnosing a P0733 code would be to have the transmission replaced assuming that internal damage has occurred. It is important to be certain that the transmission is faulty before replacing it. For whichever route gets taken, the labor will be expensive, so it is best to make sure the transmission actually needs to be replaced before adding even more money to the bill.

How serious is the P0733 code?

The P0733 code is very serious. This code can cause a number of drivability issues and is very likely to leave the driver stranded on the side of the road somewhere. It is best to have this code diagnosed and repaired as soon as possible to avoid further damage to the vehicle and to prevent being stranded anywhere.

What repairs can fix the P0733 code?

Repairs that can fix a P0733 code would include:

Additional comments regarding the P0733 code

Complete transmission replacement is worst case scenario for a P0733 code. Be sure to rule out all other less expensive possibilities before replacing the transmission. This could save dividends in the long run.

Need help with a P0733 code?

YourMechanic offers certified mobile mechanics who will come to your home or office to diagnose and repair your vehicle. Get a quote and book an appointment online or speak to a service advisor at 1-800-701-6230.

trouble codes
Check Engine Light
P0733

Fast and easy Check Engine Light is on Inspection service at your home or office.

SCHEDULE P0733 DIAGNOSTIC
Get a fair and transparent estimate upfront

Recent Check Engine Light is on Inspection reviews

Excellent Rating


YourMechanic Check Engine Light is on Inspection Service

Average Rating

4.8/5

Number of Reviews

4,743

Rating Summary
4,361
185
47
28
122
4,361
185
47
28
122

Oreste

12 years of experience
108 reviews
Oreste
12 years of experience
Nissan Altima - Check Engine Light is on - Hialeah, Florida
Showed up quick, and went straight to inspecting a brake light on the dash issue. He found the issue, fixed it, and showed me exactly what was wrong. Thank you!

Daniel

9 years of experience
58 reviews
Daniel
9 years of experience
Honda Fit - Check Engine Light is on - Chicago, Illinois
Told me everything I needed to know and switch out after the inspection. So, I scheduled another service the next day for all the fixes, or fluid maintenance.

Patrick

31 years of experience
1032 reviews
Patrick
31 years of experience
Hyundai Santa Fe - Check Engine Light is on - Austin, Texas
Even after working on my car, he took the time to explain what he did, the parts, and any next steps. Very knowledgeable!

Joe

12 years of experience
22 reviews
Joe
12 years of experience
Toyota 4Runner - Check Engine Light is on - Sacramento, California
Joe was very thorough in his inspections, and his knowledge & experience was clear in his explanations of what was wrong with my car. I really appreciated his recommendations, and the fact that he worked so efficiently that it cut down on time... I would definitely book with him again.

More related articles

Insurance Requirements for Car Registration in Kentucky
The The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle registration. The minimum financial responsibility requirements for drivers under Kentucky law...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Shutterstock.com Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore. You may want to check out the Ethnology Museum, or the Southern...
Veteran and Military Driver Laws and Benefits in Idaho
The The state of Idaho offers a number of benefits and perks for those Americans who have either served in an Armed Forces branch in the past, or are current active military members. Vehicle registration benefits Disabled veterans with a...

Related questions

ESP Light and column electrical failures after a sharp turn.

That must have been one hard turn! The ESP light is for the Electronic Stability Program: a system built into your braking system to help prevent the car from going out of control in a sharp turn. You could have...

Had p0715 code replaced input speed sensor cut engine light off but in 2 mile it still threw code p0715 again

Hi. There could be a problem internally were the speed sensor is reading making it still throw the code. There also could be a problem with the wiring harness or connector going to the speed sensors. The wiring could have...

My car keeps showing safety mode, when the rpm crosses 6000 the cars power reduces and wont move.

The gap between the 6K and the 7K line is considered the red zone. This zone is marked as the over-revving speed for the engine as the valves cannot shut any faster and the timing chain creates too much slack...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1-800-701-6230 · hi@yourmechanic.com