C1220 Code - Brake Pressure Sensor Supply Voltage Circuit High
Quick Answer
The C1220 code indicates a problem with the brake pressure sensor supply voltage circuit being too high. Common causes include Faulty brake pressure sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning ABS control module. 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
- C1220 indicates Brake Pressure Sensor Supply Voltage Circuit High.
- Common causes
- Common causes include Faulty brake pressure sensor, Damaged wiring or connectors in the sensor circuit, Malfunctioning ABS control module.
- 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.
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Code C1220 Description
The C1220 code indicates a problem with the brake pressure sensor supply voltage circuit being too high. The brake pressure sensor is a critical component of the vehicle's anti-lock braking system (ABS), as it measures the hydraulic pressure within the brake system. This information is used by the ABS control module to optimize braking performance and prevent wheel lock-up during sudden stops or slippery road conditions.
Common Causes of C1220
- Faulty brake pressure sensor
- Damaged wiring or connectors in the sensor circuit
- Malfunctioning ABS control module
- Corrosion or water damage in the sensor circuit
- Electrical issues such as a short circuit or high voltage spikes
Symptoms of C1220
- Illuminated ABS warning light on the dashboard
- Increased stopping distance when applying the brakes
- ABS system activates unexpectedly or more frequently
- Loss of ABS system functionality
- Brake pedal feels spongy or unresponsive
How to Fix C1220
- Begin by performing a thorough inspection of the brake pressure sensor circuit, including the sensor itself, wiring, and connectors.
- Test the sensor's voltage output using a multimeter to verify if it is within the specified range.
- Replace the brake pressure sensor if it is found to be faulty or reading excessively high voltage.
- Check and repair any damaged wiring or connectors in the circuit.
- If the issue persists, diagnose the ABS control module for any malfunctions and replace if necessary.
Cost to Fix C1220
The cost of repairing a brake pressure sensor supply voltage circuit high issue can vary depending on the extent of the problem and the specific components that need replacement. On average, the cost for parts such as a new brake pressure sensor can range from $100 to $300, while the labor costs for diagnosis and repair may add an additional $150 to $300. Therefore, the total repair cost could be between $250 to $600. It's important to note that labor rates can vary between different repair shops and locations, so it's advisable to obtain quotes from multiple sources to ensure a fair price.
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Code C1220 Information for Specific Makes
- C1220 Buick — Brake Pressure Sensor Supply Voltage Circuit High
- C1220 Cadillac — Brake Pressure Sensor Supply Voltage Circuit High
- C1220 Chevrolet — Brake Pressure Sensor Supply Voltage Circuit High
- C1220 Ford — Yellow ABS Warning Indicator Failure
- C1220 GMC — Brake Pressure Sensor Supply Voltage Circuit High
- C1220 Lincoln — Yellow ABS Warning Indicator Failure
- C1220 Mercury — Yellow ABS Warning Indicator Failure
Frequently Asked Questions about C1220 Code
What does the OBDII code C1220 indicate?
C1220 indicates a problem with the brake pressure sensor supply voltage circuit being too high, which can affect the vehicle's braking system performance.
What are common symptoms of the C1220 code?
Common symptoms include an illuminated brake warning light on the dashboard, erratic brake performance, and potential issues with anti-lock braking system (ABS) functionality.
What are the possible causes of the C1220 code?
Possible causes include a faulty brake pressure sensor, damaged wiring or connectors in the circuit, or issues with the vehicle’s main power supply affecting the sensor.
How can I diagnose the C1220 code?
To diagnose C1220, check the brake pressure sensor and its wiring for damage, measure the voltage at the sensor, and inspect the vehicle's electrical system for any faults.
What repairs are typically needed for the C1220 code?
Repairs may include replacing a faulty brake pressure sensor, repairing or replacing damaged wiring or connectors, or addressing issues in the vehicle’s electrical system.
Can I drive my vehicle with the C1220 code?
While you may be able to drive the vehicle, it is not recommended due to potential braking issues, which could compromise safety.
How can I clear the C1220 code from the vehicle’s computer?
The C1220 code can be cleared using an OBDII scanner after addressing the underlying issue, or by disconnecting the vehicle’s battery for a short period.
Will the C1220 code cause my vehicle to fail an emissions test?
While C1220 itself is not directly related to emissions, an illuminated check engine light may cause the vehicle to fail an emissions test.
What should I do if the C1220 code keeps returning after repairs?
If the C1220 code returns, further diagnosis is needed to check for intermittent wiring issues, faulty components, or possible problems with the vehicle’s control modules.
Discuss the causes and fixes for C1220 OBDII Code
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