DTC Troubleshooting: P2002 (187)
  1. Apply vacuum to rear exhaust pressure line (A).
Does it hold vacuum?
YES -
Check for a restricted between the DPF differential pressure sensor and the DPF, then go to Step 25 .
NO -
Go to Step 13 .
  1. Close the front exhaust pressure line of the DPF side.
  1. Apply vacuum to front exhaust pressure line.
Does it hold vacuum?
YES -
Go to Step 15 .
NO -
Repair the front exhaust pressure line, then go to Step 25 .
  1. Close the rear exhaust pressure line of the DPF side.
  1. Apply vacuum to rear exhaust pressure line.
Does it hold vacuum?
YES -
Go to Step 17 .
NO -
Repair the rear exhaust pressure line, then go to Step 25 .
  1. Turn the ignition switch ON (II).
  1. Check the DIESEL PARTICULATE FILTER (DPF) DIFFERENTIAL PRESSURE in the DATA LIST with the HDS.
Is there about 0−2 kPa (0−0.02 kgf/cm 2 , 0−0.29 psi)?
YES -
Go to Step 19 .
NO -
Replace the DPF differential pressure sensor, then go to Step 24 .