P1551 Lexus Code - Battery Current Sensor Circuit Low Input
Quick Answer
The power generation voltage variable control enables fuel consumption to be decreased by reducing the engine load which is caused by the power generation of the generator. Common causes include Faulty Battery Current Sensor (Built into the Generator Control ECU Assembly), Battery Current Sensor harness is open or shorted, Battery Current 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
- P1551 Lexus indicates Battery Current Sensor Circuit Low Input.
- Common causes
- Common causes include Faulty Battery Current Sensor (Built into the Generator Control ECU Assembly), Battery Current Sensor harness is open or shorted, Battery Current 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 P1551 Lexus Description
What are the Possible Causes of the DTC P1551 Lexus?
- Faulty Battery Current Sensor (Built into the Generator Control ECU Assembly)
- Battery Current Sensor harness is open or shorted
- Battery Current Sensor circuit poor electrical connection
How to Fix the DTC P1551 Lexus?
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 P1551 Lexus 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 P1551 Lexus Code
1. What does the OBDII code P1551 mean on a Lexus?
P1551 indicates a low input signal from the battery current sensor circuit, suggesting an issue with the sensor or its electrical connections.
2. What are the symptoms of code P1551 on a Lexus?
Symptoms include battery charging issues, illuminated check engine light, fluctuating battery voltage, and possible battery drain.
3. What causes the P1551 code on a Lexus?
Common causes include a faulty battery current sensor, damaged wiring or connectors, corrosion, or a malfunctioning alternator.
4. Can I drive my Lexus with the P1551 code?
Driving with this code is possible, but it can lead to battery performance issues or charging system failure if not resolved promptly.
5. How do you fix the P1551 code on a Lexus?
Repairs may include inspecting and replacing the battery current sensor, repairing damaged wiring, cleaning corroded connections, or replacing the alternator if necessary.
6. How do you diagnose the root cause of code P1551 on a Lexus?
Start by checking the wiring and connectors to the battery current sensor, testing the sensor’s output, and inspecting the alternator charging system for abnormalities.
7. How much does it cost to repair the P1551 code on a Lexus?
Repair costs vary but can range from $100 to $300 for sensor replacement or wiring repairs, with higher costs for alternator repairs.
8. Can a weak battery cause the P1551 code on a Lexus?
Yes, a weak or failing battery can contribute to this code by disrupting the current sensor's ability to function properly.
9. Where is the battery current sensor located on a Lexus?
The battery current sensor is typically located near the battery negative terminal or integrated into the wiring harness close to the battery.
10. Can the P1551 code clear itself on a Lexus?
The code may clear temporarily after restarting the car, but the underlying issue will need to be repaired to prevent it from returning.
Discuss the causes and fixes for P1551 Lexus OBDII Code
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