B0021 Tatra T613 Diagnostic Trouble Code

B0021 Tatra T613 code definition:
B0021 is a kind of OBD-II Diagnostic B-Body Diagnostic Trouble Code for Tatra T613.

B0021 Tatra T613 is defined as Ignition Coil B Primary/Secondary Circuit Malfunction.This code is a generic trouble code, meaning it applies to all vehicles equipped with OBD-II tool, or vehicles made since 1996 up to present. This is because the barometric pressure sensor is part of the MAF sensor. Sometimes, the MAF's sensing wire can accumulate and get covered with dirt, dust and/or oil residue, which can also lead to the error code.

Symptoms

Symptoms of a B0021 Tatra T613 diagnostic trouble code may include:
  • Blown fuse (if applicable)
  • Engine surge
  • Reduction in engine performance, especially at low RPM levels
  • Diminished fuel efficiency
Place of B0021 in engine

Possible Causes :

  • The Mass Airflow sensor is a hot wire that senses the volume of air entering the intake manifold. The computer uses this information to control fuel mixture.
  • Defective ECU strategies or components will prevent proper regeneration
  • Dirty air cleaner element Damaged DPF

Common Misdiagnoses

  1. Vehicle Speed Output Circuit Problem
  2. Cruise Control Servo Indicates Low Problem
  3. A/C System High Pressure High Temperature Problem
  4. PCM Stack Overrun Problem
  5. Transmission Control Module Reprogrammable Memory Problem

Repair Processes :

Look for missing ground strap or a rusty ground where the fuel tank is grounded to the frame. Check for damage to the wiring harness connector. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data.

Process Tips

Diagnostic trouble code B0021 Tatra T613 is not difficult to diagnose and repair. Thus, it always pays to have a qualified technician to look after your vehicle should this error code arise.

Diagnosing this code requires the engine to be in good running shape, without unmetered air entering the engine. If other codes that relates to misfiring condition, lean running or air entering the engine is present, then you must first fix those error codes before B0021 Tatra T613.

Fortunately, B0021 Tatra T613 is a fairly common OBD code, meaning that it applies to all makes and models of vehicles made after 1996.

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