Error code

OBD2 P0650

OBD2P0650
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.

What it means

Malfunction Indicator Lamp (MIL) Control Circuit.

Severity

moderateCan drive, but should be addressed as soon as possible.

Summary

P0650 indicates a malfunction in the Malfunction Indicator Lamp (MIL) control circuit or wiring related to it. The MIL typically refers to the 'CHECK ENGINE' light but can also apply to other warning lights on some vehicles.

Symptoms

  • Stored trouble code
  • Malfunction indicator lamp may flash or remain lit after self-diagnostic tests are completed upon starting the vehicle
  • In some cases, the MIL lamp may not illuminate at all

Common Causes

  • Damaged, burnt, shorted, disconnected, or corroded wiring and/or connectors in the CAN bus system
  • Improperly tightened ground straps or wiring due to sloppy maintenance or repair work
  • Failures or malfunctions in the MIL-associated circuitry of the PCM or other controller

Diagnosis

  1. Record all fault codes and freeze frame data.
  2. Check system voltage and clear the code to see if it returns after a drive cycle.
  3. Inspect ground connection points and straps for proper connections.
  4. Thoroughly inspect visible wiring and connectors for damage, especially near hot exhaust components.

Fixes

  • Repair or replace damaged wiring/connectors as required.

FAQ

Can I drive with P0650?

Yes, but it's advisable to address the issue promptly.

What causes P0650?

Common causes include damaged wiring/connectors and improper ground connections.

View source

Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.

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