How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask roybelding Your Own Question
roybelding
roybelding, Shop Foreman Freightliner trucks
Category: Medium and Heavy Trucks
Satisfied Customers: 6170
Experience:  Shop Froeman for Freightliner Trucks
3506196
Type Your Medium and Heavy Trucks Question Here...
roybelding is online now
A new question is answered every 9 seconds

What those the code EEC 061 SPN004334 DEF PRESSURE SENSOR 07

Customer Question

What those the code EEC 061 SPN004334 DEF PRESSURE SENSOR 07 means and what could be wrong
JA: We'll do all we can to help. Tell me a bit more about what's going on so the Heavy Equipment Mechanic can help you best.
Customer: Yellow engine light is on and it to that cold 4 pressure sensor high pressure system
JA: Is there anything else important you think the Heavy Equipment Mechanic should know?
Customer: Will that cause the system not to burn the Def fluid
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Heavy Equipment Mechanic about your situation and then connect you two.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  roybelding replied 1 year ago.

good morning my name is ***** ***** I will assist

what is the make, model and engine???

Roy

Expert:  roybelding replied 1 year ago.

are you there, trying to help

Expert:  roybelding replied 1 year ago.

ok, found info on the code for you. take a look and see. what have you done so far???

Roy

SPN 4334/FMI 7 - EPA10

DEF Pressure Low

This code sets when the Aftertreatment Control Module (ACM) detects that the Diesel Exhaust Fluid (DEF) pump is not building 72 psi during a pressure build cycle (60 seconds).

SPN 4334/FMI 7

DescriptionDEF Pressure Low

Monitored ParameterDEF Pressure

Typical Enabling ConditionsPressure Limiting Unit On, Dosing Enabled

Monitor SequenceNone

Execution FrequencyContinuous when enabling conditions met

Typical Duration60 Seconds

Dash LampsMIL, CEL

Engine ReactionDerate 25%

VerificationSCR Quantity Test

Show/Hide Checkboxes

NOTE: If there is oil present in the air system, the Pressure Limiting Unit (PLU), Diesel Exhaust Fluid (DEF) metering unit and the associated air lines should be cleaned to prevent repeat failures.

ENGINE EXHAUST

To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.

PERSONAL INJURY

To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked.

EYE INJURY

To avoid injury from flying debris when using compressed air, wear adequate eye protection (face shield or safety goggles) and do not exceed 276 kPa (40 psi) air pressure.

NOTE: It is normal to have some DEF discharge from the pump outlet after the SCR air pressure test has been performed.

  1. Check the DEF for contamination. Refer to section "Checking Diesel Exhaust Fluid Quality" . Is there contamination in the DEF?
    1. Yes; Refer to section "Diesel Exhaust Fluid in Fuel" for fuel intrusion or Refer to section "Diesel Exhaust Fluid in Coolant" for coolant intrusion. Verify repair.
    2. No; Go to step 2.
  2. Connect DiagnosticLink® . Go to step 3.
  3. Turn the ignition ON (key ON, engine OFF). Go to step 4.
  4. Check for other fault codes. Are there any fault codes present for the following components?
    • Pressure Limiting Unit (PLU)
    • DEF pump
    • DEF pressure sensor
    • DEF air pressure sensor
    • DEF tank level/zone faults
    • Low DEF air pressure
    1. Yes; diagnose and repair the other fault codes first. Verify repair.
    2. No; Go to step 5.
  5. Start and run the engine to build up the air pressure in the vehicle. Does the air pressure in the secondary air system build and hold above 689 kPa (100 psi)?
    1. Yes; Go to step 6.
    2. No; Refer to section "Will Not Build Air Pressure or Slow to Build Air Pressure" .
  6. Turn the ignition OFF. Go to step 7.
  7. Wait five minutes for the purge cycle to complete. Go to step 8.
  8. Visually/audibly inspect air supply lines for leaks, kinks, cracks or melting from the air tank to Pressure Limiting Unit (PLU) and from pressure limiting unit to DEF pump and DEF metering unit. Are there any damaged lines or air leaks present?
    1. Yes; repair as necessary. Verify repair.
    2. No; Go to step 9.
  9. Disconnect the air supply line at the DEF pump (1). Go to step 10.
  10. Connect a suitable air pressure gauge (0 to 1379 kPa) (0 to 200 psi) to the end of the DEF air supply line. Go to step 11.
  11. Turn the ignition ON (key ON, engine OFF). Go to step 12.
  12. Using DiagnosticLink, perform the SCR air pressure test (60 second duration) while monitoring the air pressure gauge. Is the air pressure between 517 to 586 kPA (75 to 85 psi)?
    1. Yes; remove the air pressure gauge and reconnect the air supply line to the DEF pump. Go to step 14.
    2. No; Go to step 13.
  13. Inspect PLU for contamination. Is there any debris, oil or coolant present in the PLU?
    1. Yes; diagnose and repair the cause of the contamination. Refer to section "Inspection of the Diesel Exhaust Fluid Compressed Air Flow System after Air Compressor Failure" and Technical Service Letter 12 TS-16Rev. Verify repair.
    2. No; replace the PLU. Verify repair.
  14. Disconnect the DEF tank return line (1) from the DEF pump (2). Refer to section "Removal of the Diesel Exhaust Fluid Line Connections" .
  15. Observe the DEF tank return outlet fitting on the pump while running the SCR air pressure test (60 second duration). Is there fluid discharge from the pump return outlet during the SCR air pressure test?
    1. Yes; replace the DEF pump pneumatic pump switch valve. Refer to section "Removal of the Diesel Exhaust Fluid Pump Module Pneumatic Switching Valve" .
    2. No; reconnect the DEF pump tank return line. Go to step 16.
  16. Disconnect the DEF pump inlet line. Attach a clear rubber hose over the DEF pump inlet port and place the other end of the hose in a clean container with fresh water. Go to step 17.
  17. Perform the SCR air pressure test while monitoring the DEF pressure. Does the DEF pressure reach 496 kPa (72 psi)?
    1. Yes; Go to step 18.
    2. No; replace the DEF pump. Refer to section "Removal of the Diesel Exhaust Fluid Pump Module" . Verify repair.
  18. Inspect the DEF pump suction line for damage or restrictions. Is the DEF pump suction line damaged or restricted?
    1. Yes; replace the DEF pump suction line. Refer to section "Removal of the Diesel Exhaust Fluid Lines (Tank to Pump)" . Verify repair.
    2. No; inspect the DEF tank header for restrictions. Repair as necessary. Verify repair.

Printed Thu Jun 02 2016 07:16:42 GMT-0400 (Eastern Daylight Time)

Copyright © 2016 by Detroit Diesel Corporation. All rights reserved.

Expert:  roybelding replied 1 year ago.

please dont forget to rate me as it is the only way I get paid for my efforts. it costs me personally to acquire the info you need

Roy

Expert:  roybelding replied 1 year ago.

please dont forget to rate me as it is the only way I get paid for my efforts. it costs me personally to acquire the info you need

Roy

Expert:  roybelding replied 1 year ago.

why are you not responding????

Expert:  roybelding replied 1 year ago.

please dont forget to rate me as it is the only way I get paid for my efforts

Roy

Expert:  roybelding replied 1 year ago.

please dont forget to rate me as it is the only way I get paid for my efforts

Roy