EN / RU / ES / FR / DE

OBDII/EOBD diagnostics trouble codes definition

If your car is equipped with OBD-II or EOBD, you can access over 5,000 generic OBD-II diagnostic trouble codes (DTCs). These codes cover various vehicle systems, including Powertrain (P0XXX, P2XXX, P34XX), Body (B0XXX), Chassis (C0XXX), and Network/Communication (U0XXX, U2XXX, U3XXX). Additionally, there are more than 13,500 manufacturer-specific OBD-II codes available for diagnosing issues unique to different car brands and models. Make sure you're equipped with the right tools to understand and resolve these trouble codes to keep your vehicle running smoothly.

By using these OBD-II codes, you can effectively diagnose issues related to engine performance, safety features, suspension, and more.

Supported manufacturers with specific OBD2 codes:

Enter code:
+
P
-
+
0
-
+
0
-
+
0
-
+
0
-


Detailed Description of Error P016B

OBDII error code P016B is a generic trouble code that indicates the engine control module (ECM) has detected a problem with the closed-loop mixture control system. Closed-loop mixture control is a system that continuously monitors and adjusts the air-fuel mixture in the engine to maintain an optimal ratio. The system is considered ''closed-loop'' because it uses feedback from oxygen sensors to make adjustments. When the ECM detects that the system is too rich (has too much fuel), it tries to adjust the mixture to bring it back within the optimal range. However, if the system is unable to adjust the mixture and it reaches a predetermined limit, the ECM will set error code P016B.

The error code P016B is usually accompanied by other symptoms such as reduced engine performance, decreased fuel efficiency, and possibly a strong smell of fuel. It''s essential to diagnose and repair the issue promptly to prevent further damage to the engine and other components.

Possible Causes of Error P016B

  • Faulty or contaminated oxygen sensor
  • Rich fuel mixture due to excessive fuel pressure
  • Clogged or dirty fuel injector(s)
  • Bad or faulty fuel pressure regulator
  • Excessive engine oil consumption causing the fuel mixture to become rich
  • Intake manifold leak or vacuum leak causing the engine to run rich
  • Faulty or malfunctioning engine control module (ECM)
  • Bad or faulty throttle body or throttle position sensor
  • Ignition system problems causing the engine to run rich

Possible Fixes for Error P016B

To fix error code P016B, it''s essential to diagnose and repair the underlying cause of the issue. Here are some possible fixes:

  • Replace the faulty or contaminated oxygen sensor
  • Check and adjust the fuel pressure to the recommended specification
  • Clean or replace the clogged or dirty fuel injector(s)
  • Replace the bad or faulty fuel pressure regulator
  • Repair or replace the intake manifold or vacuum leak
  • Check and repair any ignition system problems
  • Reset the ECM and reprogram it if necessary
  • Perform a fuel system cleaning to remove any contaminants

It''s recommended to consult a professional mechanic if you''re not familiar with the diagnosis and repair process.

Can't find the right OBDII code in the catalog? Get professional advice from our smart assistant and find out the exact cause of the problem today!

Chat