BMW DTC P0077 – Intake Valve Control Solenoid Circuit High (Bank 1)
DTC P0077 meaning on BMW
DTC P0077 indicates a fault in the intake valve control solenoid circuit on Bank 1 of a BMW vehicle. The Engine Control Module (ECM) monitors the circuit and detects a high voltage condition, signaling an issue with the intake valve control solenoid.
BMW DTC P0077 symptoms
Symptoms of DTC P0077 on a BMW may include rough idling, reduced engine performance, decreased fuel efficiency, and in some cases, the Check Engine Light may illuminate on the dashboard.
BMW DTC P0077 causes
The common causes of DTC P0077 on a BMW include a faulty intake valve control solenoid, damaged wiring or connectors in the solenoid circuit, or a malfunctioning ECM.
BMW DTC P0077 seriousness
While DTC P0077 may not cause immediate drivability issues, it can lead to reduced engine performance and fuel efficiency if left unresolved. It is recommended to address this fault promptly to prevent further complications.
How to diagnose DTC P0077 on BMW
To diagnose DTC P0077 on a BMW, a mechanic can use a diagnostic scanner to retrieve the fault code and perform a visual inspection of the intake valve control solenoid and its wiring. Testing the solenoid’s resistance and checking for proper voltage supply can help pinpoint the issue.
How to fix DTC P0077 on BMW
Fixing DTC P0077 on a BMW typically involves replacing the faulty intake valve control solenoid, repairing any damaged wiring or connectors in the circuit, or addressing any ECM issues. Once the root cause is identified and resolved, the fault code should be cleared.
How to erase DTC P0077 on BMW
To erase DTC P0077 on a BMW, the fault code can be cleared using a diagnostic scanner or by disconnecting the vehicle’s battery for a few minutes. After the repair is completed, clearing the fault code will reset the Check Engine Light and ensure the issue has been resolved.
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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