P1826 – BMW DTC

BMW DTC P1826 – Shiftlock Solenoid Relay (CVT) Circuit Low

DTC P1826 meaning on BMW

DTC P1826 indicates a fault in the Shiftlock Solenoid Relay circuit for BMW vehicles equipped with a Continuously Variable Transmission (CVT). The Powertrain Control Module (PCM) detects a low voltage condition in the circuit, which controls the operation of the shift lock solenoid.

BMW DTC P1826 symptoms

Symptoms of DTC P1826 may include:

• Difficulty shifting out of Park
• Inability to shift gears
• Stuck gear shifter
• Warning lights on the dashboard

BMW DTC P1826 causes

Common causes of DTC P1826 include:

• Faulty shiftlock solenoid relay
• Corroded or damaged wiring in the circuit
• Loose connections in the circuit
• Defective PCM

BMW DTC P1826 seriousness

While DTC P1826 may not directly affect the drivability of the vehicle, it can lead to inconvenience and safety concerns if the gear shifter becomes stuck. It is recommended to address this issue promptly to ensure proper operation of the transmission system.

How to diagnose DTC P1826 on BMW

To diagnose DTC P1826, a mechanic can perform the following steps:

1. Use a diagnostic scanner to retrieve the fault code
2. Inspect the shiftlock solenoid relay and related wiring for damage
3. Check for loose connections in the circuit
4. Test the voltage at the solenoid relay to verify the low voltage condition

How to fix DTC P1826 on BMW

To fix DTC P1826, the following steps can be taken:

1. Replace the faulty shiftlock solenoid relay
2. Repair or replace any damaged wiring in the circuit
3. Ensure all connections are secure and free of corrosion
4. If necessary, replace the PCM with a new unit

How to erase DTC P1826 on BMW

After addressing the underlying issue causing DTC P1826, the fault code can be erased using a diagnostic scanner. This will clear the code from the PCM’s memory and reset the system. It is important to verify that the issue has been resolved before clearing the code.

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

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

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