P0122 1998 Honda Civic Code - Throttle Position Sensor 'A' Circuit Low Voltage
Quick Answer
The Throttle Pedal Position (TPP) responds to the accelerator pedal movement. Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor circuit poor electrical connection. 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
- P0122 1998 Honda Civic indicates Throttle Position Sensor 'A' Circuit Low Voltage.
- Common causes
- Common causes include Faulty throttle position sensor, Throttle position sensor harness is open or shorted, Throttle position sensor circuit poor electrical connection.
- 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.
Code P0122 1998 Honda Civic Description
Idle position of the throttle valve is determined by the ECM receiving the signal from the throttle position sensor. This sensor controls engine operation such as fuel cut. On the other hand, the Wide open and closed throttle position switch, which is built into the throttle position sensor unit, is not used for engine control.
What are the Possible Causes of the DTC P0122 1998 Honda Civic?
- Faulty throttle position sensor
- Throttle position sensor harness is open or shorted
- Throttle position sensor circuit poor electrical connection
How to Fix the DTC P0122 1998 Honda Civic?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0122 1998 Honda Civic code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0122 1998 Honda Civic Code
1. What are the common symptoms of OBDII code P0122 in a 1998 Honda Civic?
- Common symptoms include rough idling, poor acceleration, stalling, and potential issues with shifting gears.
2. What is the main cause of OBDII code P0122 in a 1998 Honda Civic?
- The main cause is usually a malfunctioning throttle position sensor (TPS), leading to low voltage in the 'A' circuit.
3. How can I diagnose the throttle position sensor in a 1998 Honda Civic with OBDII code P0122?
- Use a multimeter to test the TPS for proper voltage output and check for any loose or damaged wiring connections.
4. Can a dirty throttle body cause OBDII code P0122 in a 1998 Honda Civic?
- Yes, a dirty throttle body can cause incorrect readings from the TPS, triggering the low voltage error code.
5. What are some repair tips for fixing OBDII code P0122 in a 1998 Honda Civic?
- Try cleaning the throttle body, inspecting the TPS wiring, and if necessary, replacing the throttle position sensor to resolve the issue.
6. Is it safe to continue driving a 1998 Honda Civic with OBDII code P0122?
- It's not recommended to drive the vehicle with this code, as it can lead to poor performance and potential safety hazards. It's best to address the issue promptly.
7. Can resetting the OBDII code P0122 in a 1998 Honda Civic make it go away permanently?
- Resetting the code may temporarily turn off the check engine light, but if the underlying issue like a faulty TPS persists, the code is likely to reappear.
8. How much does it typically cost to replace a throttle position sensor in a 1998 Honda Civic?
- The cost of replacing a throttle position sensor can vary, but it usually ranges from $100 to $200, including parts and labor.
9. Are there any preventative measures to avoid OBDII code P0122 in a 1998 Honda Civic?
- Regular maintenance, such as cleaning the throttle body and checking the TPS wiring during tune-ups, can help prevent issues that trigger this error code.
10. Can a DIY enthusiast fix OBDII code P0122 in a 1998 Honda Civic, or is professional help necessary?
- Depending on your skill level and tools available, some DIY enthusiasts may be able to replace the throttle position sensor themselves. However, if unsure, it's best to seek professional help to ensure proper diagnosis and repair.
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