C1581 Code - Assist Map Number Un-Writing
Quick Answer
The Power Steering ECU assembly outputs this Diagnostic Trouble Code (DTC) when it determines that the assist map is not written in the ECU. Common causes include Faulty Power Steering ECU, Power Steering ECU harness is open or shorted, Power Steering ECU 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
- C1581 indicates Assist Map Number Un-Writing.
- Common causes
- Common causes include Faulty Power Steering ECU, Power Steering ECU harness is open or shorted, Power Steering ECU 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 C1581 Description
What are the Possible Causes of the DTC C1581?
- Faulty Power Steering ECU
- Power Steering ECU harness is open or shorted
- Power Steering ECU circuit poor electrical connection
How to Fix the DTC C1581?
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 C1581 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.
Need more information about the C1581 code?
Need more information on how to fix the C1581 code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the C1581 code diagnosed by a professional: Find a repair shop in your area
Information for Specific Makes
- C1581 Chrysler — Front/Rear Side Tire Pressure Sensor Location Undetermined
- C1581 Dodge — Front/Rear Side Tire Pressure Sensor Location Undetermined
- C1581 Jeep — Front/Rear Side Tire Pressure Sensor Location Undetermined
- C1581 Lexus — Assist Map Number Un-Writing
- C1581 RAM — Front/Rear Side Tire Pressure Sensor Location Undetermined
- C1581 Scion — Assist Map Number Un-Writing
- C1581 Toyota — Assist Map Number Un-Writing
Frequently Asked Questions about C1581 Code
1. What are the common symptoms of OBDII code C1581 (Assist Map Number Un-Writing)?
- Common symptoms include loss of power steering assist, illuminated power steering warning light on the dashboard, and difficulty steering the vehicle.
2. What causes the OBDII code C1581 to trigger?
- This code is typically triggered when there is a communication error between the power steering control module and other vehicle modules, or when there is a fault in the power steering system itself.
3. How can I diagnose the cause of OBDII code C1581?
- Diagnosing this code usually involves using a diagnostic scanner to retrieve the specific error codes stored in the power steering control module and checking the power steering system for any visible issues.
4. Can I still drive my vehicle with OBDII code C1581 present?
- It is not recommended to drive the vehicle with this code present, as it can affect the power steering system's functionality and potentially compromise the vehicle's safety.
5. What are some repair tips for fixing OBDII code C1581?
- Repair tips may include checking and repairing any damaged wiring or connectors in the power steering system, resetting the power steering control module, or replacing faulty components such as the power steering assist motor.
6. Is it safe to reset the OBDII code C1581 without addressing the underlying issue?
- While resetting the code may temporarily turn off the warning light, it is important to address the root cause of the issue to prevent further problems with the power steering system.
7. How much does it typically cost to repair OBDII code C1581?
- The cost of repairing this code can vary depending on the specific issue causing it, but it may involve expenses for diagnostic services, parts replacement, and labor.
8. Can a DIY enthusiast fix OBDII code C1581 at home?
- Depending on the skill level and experience of the individual, some DIY enthusiasts may be able to diagnose and repair this code at home, especially if it involves simple fixes like checking and reconnecting wiring.
9. Will OBDII code C1581 cause permanent damage to my vehicle if left unresolved?
- Ignoring this code can potentially lead to more severe power steering issues and compromise the vehicle's drivability, so it is best to address it promptly to prevent any lasting damage.
10. How long does it typically take to resolve OBDII code C1581?
- The time needed to resolve this code varies based on the complexity of the underlying issue, the availability of parts, and the repair process, but it is advisable to address it as soon as possible to avoid further complications.
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