C1899 Steering VAPS Circuit Loop Short to Battery

OBD2 Code: C1899

Description: Steering VAPS (Variable Assist Power Steering) circuit loop short to battery.

Definition: This code indicates that there is a short circuit in the Variable Assist Power Steering system, specifically where the circuit is connected directly to the battery. This can lead to improper steering assist levels and may affect vehicle handling.

c1899 – Steering VAPS Circuit Loop Short to Battery

Severity: Critical

Common Causes

C1899 – Steering VAPS Circuit Loop Short to Battery

Common causes:

• Faulty Variable Assist Power Steering (VAPS) module
• Short circuit in the wiring harness
• Corrosion or poor connection at the VAPS module connector
• Defective steering angle sensor

 

Common Misdiagnosis

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OBD2 Code: C1899

Description: Steering VAPS Circuit Loop Short to Battery

Common Misdiagnosis: Replacing the steering angle sensor without checking for wiring issues or battery voltage problems.

 

Common Diagnostic Steps

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OBD2 Code: C1899

Description: Steering VAPS Circuit Loop Short to Battery

Common Diagnostic Steps:

• Verify the code using an OBD-II scanner and clear it to see if it returns.
• Inspect the steering VAPS (Variable Assist Power Steering) circuit for any visible damage or corrosion.
• Check the wiring harness and connectors for signs of wear, loose connections, or short circuits.
• Test the battery voltage and ensure that it is within the manufacturer’s specifications.
• Use a multimeter to measure resistance in the VAPS circuit to identify shorts or open circuits.
• Examine related fuses and relays for functionality and replace them if necessary.
• If equipped, check for Technical Service Bulletins (TSBs) related to this issue from the vehicle manufacturer.
• If no issues are found with wiring or components, consider testing or replacing the steering control module as a last resort.