C1511

Caution

Left Front Wheel Pressure Reduction Performance Problem

Severity
Caution
Category
Chassis
Code Type
Manufacturer Specific
Applicable Regions
US, EU, Global

Is it safe to drive?

🔵 Do not use this page as drive-clearance. Monitor the alert and arrange service if it returns.

What does C1511 mean?

C-code C1511 means "Left Front Wheel Pressure Reduction Performance Problem". It is a manufacturer-specific diagnostic trouble code (DTC) in the chassis / braking. The pressure reading from the left front wheel pressure reduction performance problem is outside the expected operating range. This code can be monitored, but service is recommended to prevent escalation. This code applies to OBD-II compliant electric and hybrid vehicles.

Possible Causes

  • Faulty pressure sensor or damaged sensor connector
  • Fluid leak causing lower-than-expected pressure readings
  • Blocked pressure port or contaminated sensing element
  • Pump or actuator failure affecting system pressure

Recommended Actions

  1. 1 Note the alert and schedule a diagnostic appointment when convenient
  2. 2 Scan for all DTCs with an OBD-II scanner — note any related codes stored alongside C1511
  3. 3 Inspect the chassis / braking component and its wiring for visible damage
  4. 4 Check for water intrusion in connector areas and clean contacts if corroded
  5. 5 Clear the DTC, road-test the vehicle, and re-scan to confirm whether the fault returns
  6. 6 If the fault persists after inspection and clearing, consult an EV-certified technician for component replacement

Related Chassis fault codes

C1091 Speed Wheel Sensor All Coherency Failure C1095 ABS Hydraulic Pump Motor Circuit Failure C1096 ABS Hydraulic Pump Motor Circuit Open C1097 ABS Hydraulic Pump Motor Circuit Short To Ground C1098 ABS Hydraulic Pump Motor Circuit Short To Battery C1100 ABS Pump Switch Circuit Failure C1101 ABS Hydraulic Valve Circuit Failure C1102 ABS Acceleration Switch Circuit Failure