P0699 Cadillac Code - 5V Reference 3 Circuit High Voltage
Quick Answer
The Engine Control Module (ECM) has four (4) internal 5 Volt reference circuits (Some models have two (2) internal 5 Volt reference circuits). Common causes include Faulty Sensor on 5 Volt circuit, Sensor on 5 Volt circuit harness is open or shorted, Sensor on 5 Volt circuit poor electrical connection. 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
- P0699 Cadillac indicates 5V Reference 3 Circuit High Voltage.
- Common causes
- Common causes include Faulty Sensor on 5 Volt circuit, Sensor on 5 Volt circuit harness is open or shorted, Sensor on 5 Volt circuit poor electrical connection.
- 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.
Code P0699 Cadillac Description
What are the Possible Causes of the DTC P0699 Cadillac?
- Faulty Sensor on 5 Volt circuit
- Sensor on 5 Volt circuit harness is open or shorted
- Sensor on 5 Volt circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0699 Cadillac?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
The 5 Volt reference 3 circuit provides 5 Volt to the following sensors: (Some models may have different sensors, please consult the factory service manual for the list of sensors for your model and year)
- Accelerator pedal position sensor 2
- Manifold absolute pressure sensor
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0699 Cadillac code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0699 Cadillac Code
1. What does the OBDII code P0699 mean on a Cadillac?
P0699 indicates a problem with the 5V Reference 3 Circuit, specifically that the voltage has exceeded the normal range.
2. What are the common symptoms of the P0699 code?
Symptoms may include the check engine light turning on, erratic or poor engine performance, stalling, or failure of certain sensors like the throttle position sensor.
3. What causes the P0699 code to appear?
Possible causes include a short to voltage in the 5V reference circuit, a faulty sensor connected to the circuit, a damaged wiring harness, or a malfunctioning powertrain control module (PCM).
4. How can I diagnose the P0699 code on my Cadillac?
Use a scan tool to confirm the code, inspect the wiring and connectors for damage, test the 5V reference circuit for excessive voltage, and check sensors associated with the 5V reference 3 circuit.
5. Which sensors are typically linked to the 5V Reference 3 Circuit?
Sensors commonly linked include the throttle position sensor (TPS), manifold absolute pressure (MAP) sensor, and other engine performance sensors.
6. Can I drive my Cadillac with the P0699 code active?
It’s not recommended to drive with this code active, as it may lead to poor engine performance, stalling, or further damage to the vehicle.
7. How do I fix the P0699 code?
Repairs may involve replacing a damaged sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or, in rare cases, replacing the PCM.
8. How much does it cost to repair the P0699 code?
Repair costs vary depending on the root cause but typically range from $100 to $500 for sensor or wiring repairs. PCM replacement can cost significantly more.
9. Can a bad PCM cause the P0699 code?
Yes, a malfunctioning PCM can fail to regulate the 5V reference circuit properly, leading to high voltage and triggering the code.
10. How can I prevent the P0699 code from recurring?
Regular maintenance, inspecting wiring and connectors for wear, and addressing sensor issues promptly can help prevent this code from recurring.
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