Guide To P0733 OBD Error Code Solutions

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Is your Check Engine Light illuminated on the car’s dashboard? Are you experiencing sudden drop in the fuel economy with stalling of the engine? Or is there any engine stalling and gear slipping? Then, there might be a possibility of an issue with the transmission control module of the car thus indicating OBD Code P0733 error.

Error Code P0733 is described as Gear 3 Incorrect Ratio. This refers to a problem in the third gear of the automatic transmission, usually caused by dirty or not enough transmission fluid or issues in the solenoid. The PCM controls automatic transmission by using multiple gear ratio and increase the vehicle speed to maximize the engine’s power output. Newer vehicle models are equipped with more than four gear ratios for fuel efficiency. The PCM decides when to shift up or down between gears, based on the vehicle speed vs. throttle position. It does so by using the input coming from various sensors to verify the correct operation of the transmission and all its components. Error Code P0733 happens when there’s a problem in shifting into 3rd gear or while driving into 3rd gear.

What causes this problem with the Gear 3 Incorrect ratio?

• Low transmission fluid level
• Dirty transmission fluid
• Transmission oil leak
• Transmission clutch problems
• Low oil pressure
• Transmission control module failure
• Transmission speed sensor failure
• PCM failure
• Corroded connections or pins
• Wring issue (corrosion, chafed, melted)

1. Automatic Transmission Solenoid - Faulty solenoids will lead to improper functioning of the transmission system and thus must be replaced if found so.
2. Transmission Control Module - TCM modules are important to converse with the PCM and take appropriate decisions in the matters of vehicle performance. Repair or replace it as required.
3. Automatic Transmission Sensor - Replace faulty transmission sensors and check for the performance and data transmissions. Buy new transmission sensor now!
4. Auto Transmission Torque Converter - Damaged torque converter will cause performance issues and affect the drivability. Thus, replace is, if needed.
5. Automatic Transmission Connector - Connectors are really important as they connect of system to another and ensure stable functioning environment. Thus, check for faulty connectors and wiring damages as required.
6. Powertrain Control Module - Faulty PCM can easily distorted engine timing causing frequent halting. Find all the Powertrain related parts with us.
7. Diagnostic Tool - In order to detect the error, one needs high grade diagnostic tools. Visit us today to grab amazing deals.

Our main motive is to achieve customer satisfaction and that’s why we will help you to diagnose P0733 code by mentioning some major symptoms below:

Common Symptoms

• Intermittent condition
• Lack of engine power
• Slow speeds
• Transmission slipping
• Transmission shifts erratic
• Harsh shifts

Have a look at some ways with which you can correct the P0733 code:

• Shift solenoid replacement
• Powertrain control module replacement
• Transmission control module replacement
• Adding or replacing the transmission fluid and filter
• Overhauling the current transmission
• Installing a brand-new transmission

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Here are some steps which you should follow in order to diagnose this fault code:

• You will need a digital volt ohm meter (DVOM) for the complete test. Continue through the tests until the problem is confirmed. You will also need a basic OBD code scanner to reset the computer and erase the code.
• Begin by checking the levels of the transmission oil. Visually inspect the transmission itself for damage. Inspect the vehicle housing for signs of cracks or damage. If there are any cracks that may or may not be leaking, the transmission should be replaced. Replace any damaged seals. Locate speed sensors on the transmission and inspect sensors and connectors for signs of damage. If any damage present, repair or replace.
• Inspect for optimal oil pressure. Using an oil pressure gauge, test the transmission oil pressure. Make sure to use the transmission pressure test port. Connect gauge to the test port and start vehicle. Ensure there are no leaks at connection.
• Check for faults in the speed sensors. Unplug the transmission speed sensors. Using multimeter, you will need to test resistance values within the sensor. If values aren't within specifications, replace sensors and clear codes.
• Identify wires involved in speed sensor circuits. Using multimeter check for continuity, shorts and open in the wires involved. This will include the ECM connector so make sure battery is disconnected before testing. Repair any problems in the circuit and clear codes.
• Test the TCM by back probing the connector and measuring electrical values to ensure it is functioning as it should.

Common Mistakes When Diagnosing the P0733 Code

When diagnosing a P0733 code the most common misdiagnoses would be to have the transmission replaced assuming that internal damage has occurred. It is important to note that the transmission is faulty before replacing it. It is best to make sure the transmission actually needs to be replaced before adding even more to the cost of repairs.