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Volvo Chassis - Vehicle with Diagnostic Trouble
Code (DTC) P2002-00, Diagnostic Instructions US10+OBD13 Emssions ONLY, Model Years 2013
(Rare), 2014

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Conditions
• Vehicle emissions level should be veri ed to be US10+OBD13.
Emissions level can be found in Premium Tech Tool (PTT) as shown
below:

• Vehicles a ected will have the following Engine Control Module
(EMS) Main Software Part Numbers 23036505.
• P2002 must be either:
- Active with Con rmed status True.
- Inactive with greater than 3 counts and Con rmed status True.

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Con rmed status True

Important Notes
• If P2002 is Con rmed status False it is not the source of the issue
that resulted in the shop visit. DO NOT troubleshoot the code. Review
the DTC Readout for codes that may be related.
• If P2002 is Inactive the latest evaluation passed and may indicate
an issue that resolved itself. The number of counts should then be
considered as an indication of an intermittent problem.
For an Active and Con rmed Code:
Inspect the following items:
1. Ensure the correct DPF and DOC are installed.
• Both parts should be OEM. Third-party aftermarket parts do not
always meet factory speci cations and can be the source of the
code.
• Take pictures of the DPF faces and the part numbers of both the
DOC and DPF for documentation.
2. Verify that there is no evidence of soot passing through the DPF.
3. Check the connections and pipes for the DPF Di erential Pressure
Sensor. Make certain that there are no leaks or damage, and the
tubes and the sensor itself are not clogged, crimped, or otherwise
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4. Make sure the DPF Di erential Pressure Sensor is reading correctly
and free of any electrical faults.
5. Check for documentation that the DPF was cleaned per service
recommendations.
Any issues found in the items above should be corrected prior to
proceeding further with diagnosis.
If all the items above are determined to be correct:

If this is the vehicle's rst visit for P2002 and the code is con rm
ed and active, clear the DTC and release the vehicle after con rming
and documenting the ve items in the section above. Do not procee
d with the below steps.

1. Record a Sensor and Parameter Values Monitor. Please refer to
CBR-864 for road test instructions.
• The road test should last approximately one hour.
• The test should follow both city and highway duty cycles.
- This includes stop-and-go driving as well as steady highway
speeds.
2. Verify the DTC status following the road test:
• Did the code recur during the road test?
• How many counts logged during the road test?
3. Start an eService case.
• The eService case MUST INCLUDE:
• A thorough description of the problem.
• A current DTC Readout from the time the vehicle arrived.
• All of the information gathered during the inspection steps
above.
- This includes the DPF and DOC pictures.
• The road test data.
• DTC status information as seen following the road test.
Cases submitted with incomplete information may be
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KC-864

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Road Test Instructions - Required Criteria For
Sensor And Parameter Value Monitor /
Recordings; Request For Data From eService US10+OBD13 To US14+OBD16 ( OBDII, Sixteen Pin
Diagnostic Connector ), Year Models 2014 To
2017; Non-Common Rail Fuel Syst

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Road test data should only be recorded at request from eService or for
dealer use in the diagnostic process. eService cases submitted with data
will not be reviewed unless all possible diagnostic procedures have been
exhausted with no fault found, and a detailed description of all steps
taken with accurate results and values is included in the case.

I. All Road Tests will need to be recorded with the
OBDII Template loaded from the test screen in
Premium Tech Tool ( PTT )
• The template le can be found here:
○ Right click the le icon and select "Save Link As..." (Chrome, FireFox)
or "Save Target As..." (Internet Explorer), then choose the Desktop or a
folder where the le can be easily located. The le cannot be opened
outside of Premium Tech Tool ( PTT ).
• Instructions for loading the template once it is saved to the hard drive
can be found in Solution CBR-270 .

II. For Emissions Evaluation:
• Data from loaded operation is preferred when possible unless the
chassis is only coding when bobtail or empty
• Both NOx sensors must be online prior to starting the road test
- System warmup can be accelerated by running a regen and
canceling when both NOx sensors are veri ed to be reading
• Smooth accelerator inputs should be used for all parts of the test
except for acceleration from a stop
- Stabbing the accelerator or suddenly letting o will cause invalid
sensor readings

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• Record:
- Two to Three instances of sustained high engine load

○ This can be done from a stop or while in motion
♦ If done while in motion RPM range should move from
approximately 1200 RPMs up through at least 1800 RPMs in
lower gear
○ Wide Open Throttle (100%) should be maintained
○ Engine load should remain at 100% during this period
- 25 to 30 miles of steady highway-speed driving
○ DO NOT use cruise control. Accelerator input values are required
for evaluation
○ Keep speed below the chassis's governed road speed
♦ Accelerator readings will not be valid if chassis is held at its
maximum speed
- Minimum of one instance of downhill deceleration lasting 20-30
seconds
○ There should be no accelerator input at this time
- Two to Five minutes of idle time before the recording is stopped.

III. For Low Oil Pressure Or Low Power Evaluation:
• Data and eService cases submitted for low power complaints will
not be reviewed unless the chassis has been con rmed to not reach
rated horsepower or torque range via dynamometer report
or dealer review of data prior to submitting to Dealer Technical
Support
• Low power issues must be veri ed during loaded operation.
Bobtail or empty operation will not provide relevant readings
• Both NOx sensors must be online prior to starting the road test unless
the problem is occurring with cold engine
- System warmup can be accelerated by running a regen and

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when both NOx sensors are veri ed to be reading

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• Smooth accelerator inputs should be used for all parts of the test
except for acceleration from a stop
- Stabbing the accelerator or suddenly letting o will cause invalid
sensor readings
• Record:
- At Least Three instances of sustained high engine load
○ This can be done from a stop or while in motion
♦ If done while in motion RPM range should move from
approximately 1200 RPMs up through at least 1800 RPMs in
lower gear
○ Wide Open Throttle (100%) should be maintained
○ Engine load should remain at or as close as possible to
100% during this period
○ Long uphill climbs are preferred for this where possible. If a
long uphill pull can be recorded it is understood that engine
load may not remain at 100% for the duration

- 15-20 miles of steady highway-speed driving
○ DO NOT use cruise control. Accelerator input values are required
for evaluation
○ Keep speed below the chassis's governed road speed
♦ Accelerator readings will not be valid if chassis is held at its
maximum speed

- Minimum of one instance of downhill deceleration lasting 20-30
seconds
○ There should be no accelerator input at this time
- One to Two minutes of idle time before the recording is stopped.

IV. Uneven Operation, Engine Stumble, Vibration
Evaluation:
• Vibration issues must be recorded in the same operating
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- If vibration is occurring only during loaded operation, for example,
data recorded during a bobtail road test would not be acceptable
- Engine temperature, weather, terrain, and driver habits, especially if
equipped with a manual transmission, should be considered
• Smooth accelerator inputs should be used for all parts of the test
except for acceleration from a stop
- Stabbing the accelerator or suddenly letting o will cause invalid
sensor readings
• Record:
-Note: Depending on the severity of symptoms, it may not be possible
to cover all items listed below. At minimum, the recording needs to
capture the problem occurring
- The complaint should be duplicated several times when possible
○ Engine parameters should be held steady while the problem is
occurring for as long as able
○ Push the spacebar once when the problem begins each time to
create a ag in the data.

- If it is possible, at least one hard acceleration with engine load
sustained at 100% for several seconds should be captured
- 10-15 miles of steady highway-speed driving
○ DO NOT use cruise control. Accelerator input values are required
for evaluation
○ Keep speed below the chassis's governed road speed
♦ Accelerator readings will not be valid if chassis is held at its
maximum speed
- Minimum of one instance of downhill deceleration lasting 20-30
seconds
○ If the issue is reported as occurring during deceleration or
engine braking this should be captured several times
○ There should be no accelerator input during this time
- 3-5 minutes of idle time before stopping the recording

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V. Allow The PC To Complete Processing The Data
• When a laptop is running on battery power, the processor speed is
reduced to increase battery life.
- Plug the laptop in to a wall outlet so it is able to run at full power
• Depending on the length of the test drive and computer specs, it may
take 15-20 minutes for the computer to complete processing the data
before the operation can be exited

VI. Attach The Road Test Data To The eService Case
• Further instructions for locating a data le can be found in CBR solution
CBR-270 or by searching for " CSV File Extraction "

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