C1250 – OBD-II DTC

OBD-II DTC C1250 – ABS Inlet Valve Coil LR Circuit Failure

DTC C1250 meaning

DTC C1250 refers to a fault in the ABS (Anti-lock Braking System) related to the inlet valve coil for the left rear wheel. This code indicates that the vehicle’s onboard diagnostic system has detected a malfunction in the electrical circuit associated with the inlet valve coil, which is responsible for controlling brake fluid flow to the left rear brake. Proper functioning of this component is crucial for maintaining optimal braking performance and safety.

DTC C1250 symptoms

Common symptoms associated with DTC C1250 may include:

• Illumination of the ABS warning light on the dashboard
• Decreased braking performance or unusual brake behavior
• Increased stopping distances
• Potential activation of the traction control or stability control systems
• Unresponsive ABS system during hard braking

DTC C1250 causes

Several factors can lead to the occurrence of DTC C1250, including:

• Faulty inlet valve coil for the left rear wheel
• Open or short circuit in the wiring harness connected to the inlet valve
• Corrosion or poor connections at the electrical terminals
• Defective ABS control module
• Issues with the vehicle’s power supply affecting the ABS system

DTC C1250 seriousness

DTC C1250 is considered a serious issue as it directly impacts the vehicle’s braking system. If left unaddressed, it can lead to:

• Increased risk of brake failure
• Reduced vehicle control during emergency braking situations
• Potential accidents due to compromised braking performance

It is essential to diagnose and repair this issue promptly to ensure safe vehicle operation.

How to diagnose DTC C1250

To diagnose DTC C1250, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the C1250 code.
2. Inspect the ABS system wiring and connectors for any visible damage or corrosion.
3. Test the inlet valve coil for continuity and resistance using a multimeter.
4. Check for any additional DTCs that may provide further insight into the issue.
5. Examine the ABS control module for proper operation and any signs of failure.

How to fix DTC C1250 step-by-step instructions

To fix DTC C1250, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect and repair any damaged wiring or connectors related to the inlet valve coil.
3. If the inlet valve coil is faulty, replace it with a new component.
4. Reconnect the battery and clear the DTC using an OBD-II scanner.
5. Test drive the vehicle to ensure the ABS system is functioning correctly and the warning light does not reappear.

How to erase DTC C1250

To erase DTC C1250, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Access the diagnostic menu and select the option to clear or erase trouble codes.
3. Confirm the action and wait for the scanner to complete the process.
4. Disconnect the scanner and start the vehicle to verify that the ABS warning light is off.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.