P1655 1998 Honda Civic Code - TMA/TMB Signal Line Failure
Quick Answer
The P1655 diagnostic trouble code (DTC) for a 1998 Honda Civic indicates a TMA/TMB signal line failure. Common causes include Faulty TCM or ECM, Corroded or damaged wiring in the TMA/TMB signal line, Loose or poor connections in the signal line. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1655 1998 Honda Civic indicates TMA/TMB Signal Line Failure.
- Common causes
- Common causes include Faulty TCM or ECM, Corroded or damaged wiring in the TMA/TMB signal line, Loose or poor connections in the signal line.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code P1655 1998 Honda Civic Description
The P1655 diagnostic trouble code (DTC) for a 1998 Honda Civic indicates a TMA/TMB signal line failure. This code is related to the transmission control module (TCM) and its communication with the engine control module (ECM). The TMA/TMB signal line is responsible for transmitting data between these two modules, allowing them to work together to ensure proper operation of the transmission system.
Common Causes of P1655 1998 Honda Civic
- Faulty TCM or ECM
- Corroded or damaged wiring in the TMA/TMB signal line
- Loose or poor connections in the signal line
- Electrical interference from other components in the vehicle
- Water or moisture damage to the signal line
Symptoms of P1655 1998 Honda Civic
- Check engine light illuminated
- Erratic shifting
- Harsh shifting
- Transmission stuck in a single gear
- Decreased fuel efficiency
How to Fix P1655 1998 Honda Civic
- Begin by using a diagnostic scanner to confirm the P1655 code and identify the specific issue with the TMA/TMB signal line.
- Inspect the wiring and connections in the signal line for any damage, corrosion, or loose connections. Repair or replace any damaged components as needed.
- Check the TCM and ECM for any faults or malfunctions. Replace these modules if necessary.
- Clear the DTC from the vehicle's memory using the diagnostic scanner.
- Test drive the vehicle to ensure that the transmission is operating correctly and that the code does not return.
Cost to Fix P1655 1998 Honda Civic
The typical repair costs for addressing a P1655 TMA/TMB signal line failure in a 1998 Honda Civic can range from $200 to $500, including parts and labor. However, it's important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops commonly charge between $80 and $150 per hour, but rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It's advisable to check local rates for a more precise estimate.
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Frequently Asked Questions about P1655 1998 Honda Civic Code
1. What does the OBDII code P1655 mean on a 1998 Honda Civic?
P1655 indicates a "TMA/TMB Signal Line Failure," which relates to a problem with the throttle motor actuator (TMA) or throttle motor body (TMB) communication.
2. What are the symptoms of a P1655 code in a 1998 Honda Civic?
Common symptoms include poor throttle response, reduced engine performance, potential stalling, and the Check Engine Light illuminating.
3. What causes the P1655 code to appear on my Honda Civic?
This code is typically caused by a faulty throttle motor actuator, damaged wiring or connectors in the signal line, or issues with the vehicle's Engine Control Module (ECM).
4. Can I drive my 1998 Honda Civic with a P1655 code?
Driving with this code is not recommended, as it can lead to unsafe driving conditions due to throttle control issues.
5. How do I diagnose a P1655 code on my Honda Civic?
Start by inspecting the wiring and connectors to the throttle motor actuator for damage or corrosion, then test the actuator itself and check for ECM-related issues.
6. How do I fix a P1655 code on a 1998 Honda Civic?
Repairs may involve replacing a damaged throttle motor actuator, repairing or replacing faulty wiring, or reprogramming or replacing the ECM if necessary.
7. What tools do I need to troubleshoot a P1655 code?
You’ll need an OBDII scanner, a multimeter to test electrical connections, and potentially a service manual for wiring diagrams.
8. How much does it cost to fix a P1655 code on a Honda Civic?
The cost can range from $50 to $800, depending on whether you need to replace the throttle motor actuator, repair wiring, or replace the ECM.
9. Can a dirty throttle body cause the P1655 code?
While rare, excessive dirt or carbon buildup in the throttle body may indirectly contribute to actuator signal issues and should be addressed during diagnostics.
10. Does clearing the code with an OBDII scanner fix the problem?
Clearing the code will turn off the Check Engine Light temporarily, but the issue will likely return unless the underlying problem is repaired.
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