Easy one-page printout for the garage or repair shop
This summary uses the existing diagnostic information shown in full below.
This code means that a part of the car's computer system is getting too much electrical power, like when a toy gets too many batteries and stops working right.
The P0699 code indicates that the power supply voltage for a specific sensor circuit, labeled 'C', is higher than expected, which can cause incorrect sensor readings.
The P0699 code is triggered when the Engine Control Module (ECM) detects a voltage level in the sensor reference voltage circuit 'C' that is higher than the specified range. This can affect the performance of the sensors connected to this circuit, as they rely on a stable reference voltage to function correctly.
• Check Engine Light is on
• Poor engine performance
• Erratic sensor readings
• Faulty sensor
• Wiring issues or short circuits
• Defective Engine Control Module (ECM)
ECM: Engine Control Module, the computer that controls engine functions.
OBD-II: On-Board Diagnostics, a system for self-diagnosing vehicle issues.
• Use an OBD-II scanner to confirm the code.
• Inspect the wiring and connectors for damage or corrosion.
• Test the voltage at the sensor reference circuit.
• Repair or replace damaged wiring or connectors.
• Replace the faulty sensor.
• Replace or reprogram the ECM if necessary.
• OBD-II scanner
• Multimeter
• Basic hand tools
$100 - $500
Moderate
• Chevrolet Silverado
• Ford F-150
• Toyota Camry
• Regularly inspect wiring and connectors.
• Ensure sensors are properly maintained.
• Avoid exposure to moisture and corrosive elements.
Sensor Issue
• Do not ignore the Check Engine Light.
• Seek professional diagnosis if unsure.
• Regular maintenance can prevent such issues.
Check if the vehicle's powertrain warranty covers sensor issues.
P0699 is a less common code but can appear in vehicles with aging electrical systems.
Moderate – It should be addressed soon to avoid potential engine performance issues.
Driving with this code may not be safe as it could affect engine performance. Always follow safety guidelines.
• Engine running
• Vehicle at operating temperature
The sensor reference voltage circuit is located within the vehicle's wiring harness and connects to the ECM and various sensors.
Q: Can I drive with a P0699 code?
A: It's not recommended to drive for long periods with this code as it can affect engine performance.
Q: How do I clear a P0699 code?
A: After repairs, use an OBD-II scanner to clear the code, but ensure the issue is resolved first.
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