P1AF6 Cadillac Code - Drive Motor 2 Control Module Hybrid Battery Voltage Isolation Sensor Circuit Low Voltage
Quick Answer
The drive motor generator Power Inverter Control Module (PIM) contains two Motor Control Modules (MCMs). Common causes include Reprogram Power Inverter Control Module (PIM), Faulty Power Inverter Control Module (PIM), Power Inverter Control Module (PIM) harness is open or shorted. 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
- P1AF6 Cadillac indicates Drive Motor 2 Control Module Hybrid Battery Voltage Isolation Sensor Circuit Low Voltage.
- Common causes
- Common causes include Reprogram Power Inverter Control Module (PIM), Faulty Power Inverter Control Module (PIM), Power Inverter Control Module (PIM) harness is open or shorted.
- 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 P1AF6 Cadillac Description
MCM LOI is detected through the use of two high-impedance resistors and voltage measuring circuitry. The two resistors are connected in series between the HV positive and HV negative circuits. The center connection of the two resistors is also connected to vehicle chassis. The MCM then measures the voltage drop across one of the resistors. Without a loss of isolation, the MCM should measure about half of the high voltage potential. This is referred to as mid-pack voltage. The Mid-pack voltage value is then doubled by the software and displayed on a scan tool as Motor 1 Isolation Voltage or Motor 2 Isolation Voltage. When a loss of isolation is present, the motor isolation voltage display will indicate voltage that is more or less than actual hybrid battery high voltage. The MCM monitors the LOI voltage measuring circuitry for correct operation.
What are the Possible Causes of the DTC P1AF6 Cadillac?
- Reprogram Power Inverter Control Module (PIM)
- Faulty Power Inverter Control Module (PIM)
- Power Inverter Control Module (PIM) harness is open or shorted
- Power Inverter Control Module (PIM) circuit poor electrical connection
How to Fix the DTC P1AF6 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1AF6 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 P1AF6 Cadillac Code
What does OBDII code P1AF6 mean for a Cadillac?
Code P1AF6 indicates a problem with the Drive Motor 2 Control Module's Hybrid Battery Voltage Isolation Sensor Circuit, specifically detecting low voltage.
What are the symptoms of code P1AF6 on a Cadillac?
Symptoms may include the illumination of the check engine light, reduced hybrid performance, or the vehicle entering a limp mode.
What causes the P1AF6 code in a Cadillac?
Common causes include a faulty Drive Motor 2 Control Module, damaged wiring or connectors, a defective hybrid battery isolation sensor, or a software issue.
Can I drive my Cadillac with the P1AF6 code?
It is not recommended, as the issue could lead to reduced hybrid system performance or further damage to electrical components.
How is the P1AF6 code diagnosed?
A technician will use an OBDII scanner to confirm the code, inspect the wiring and connectors, and test the isolation sensor and control module for proper function.
What repairs can fix the P1AF6 code?
Repairs may include replacing the hybrid battery isolation sensor, repairing or replacing damaged wiring, or replacing the Drive Motor 2 Control Module.
How much does it cost to fix code P1AF6 on a Cadillac?
Repair costs can vary widely depending on the exact cause but may range from $200 to $1,500 or more, depending on parts and labor.
Can a software update resolve the P1AF6 code?
In some cases, a software update or reprogramming of the Drive Motor 2 Control Module may resolve the issue.
What tools are needed to diagnose and repair the P1AF6 code?
Tools may include an OBDII scanner, multimeter, wiring diagrams, and possibly specialized equipment for hybrid system diagnostics.
Is the P1AF6 code specific to certain Cadillac models?
This code typically appears on Cadillac hybrid or plug-in hybrid models equipped with a Drive Motor 2 Control Module.
Discuss the causes and fixes for P1AF6 Cadillac OBDII Code
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