What Does the P0988 Code Mean?
The P0988 OBD-II code indicates a malfunction in the Transmission Fluid Pressure Sensor/Switch “E” Circuit. This code is set when the engine’s control module (PCM) or Transmission Control Module (TCM) detects a problem with the electrical circuit associated with the transmission fluid pressure solenoid.
What Causes the P0988 Code?
Several factors can trigger the P0988 code, including:
- Transmission Control Module (TCM) failure
- Low transmission fluid level
- Transmission fluid pressure sensor failure
- Wiring issues, such as damaged or corroded wiring
What Are the Symptoms of the P0988 Code?
When the P0988 code is present, you may notice the following symptoms:
- Transmission may not shift properly
- Increased fuel consumption
- Delayed or erratic shifting
How Serious Is the P0988 Code?
The P0988 code is categorized as an urgent issue that requires immediate attention. Ignoring this code can lead to severe damage to the transmission, which may result in costly repairs and unsafe driving conditions.
How to Diagnose the P0988 Code
To properly diagnose the P0988 code, follow these steps:
- Use an OBD-II scanner to confirm the presence of the P0988 code and check for any additional codes.
- Inspect the transmission fluid level and condition; top off or replace as necessary.
- Check the wiring and connectors leading to the transmission fluid pressure sensor for damage.
- Test the transmission fluid pressure sensor for proper operation.
- Evaluate the TCM for any faults that could contribute to the code.
Common Repairs for the P0988 Code
Common repairs that may be necessary to resolve the P0988 code include:
- Replacing the transmission fluid pressure sensor
- Repairing or replacing damaged wiring or connectors
- Refilling or flushing the transmission fluid
- Replacing the Transmission Control Module (TCM) if found faulty
How Much Does It Cost to Fix the P0988 Code?
The cost of repairs for the P0988 code can vary widely based on the specific issue and labor rates in your area. On average, you might expect to pay between $100 and $600, depending on whether you need to replace a sensor, repair wiring, or replace the TCM.
Can I Fix the P0988 Code Myself?
While some DIY enthusiasts may feel comfortable addressing minor issues, such as checking fluid levels or replacing a sensor, diagnosing and fixing the P0988 code often requires specialized knowledge and tools. If you’re unsure, it is advisable to seek the help of a professional mechanic to ensure accurate diagnosis and repair.
