Dodge Sprinter. Manual — part 495
Symptom:
P2062-ENGINE OIL SENSOR MONITORING ERROR
POSSIBLE CAUSES
ENGINE OIL SENSOR
VERIFY THE CURRENT DTC
TEST
ACTION
APPLICABILITY
1
Turn the ignition off.
Check the engine oil level. Add or remove as necessary to obtain proper engine oil
level.
Start the engine and allow it to reach operating temperature.
Test drive the vehicle.
With the DRBIII
t, read the ECM DTCs.
Did this DTC set again?
All
Yes
→ Replace the Engine Oil Sensor.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Test complete.
Perform ROAD TEST VERIFICATION - VER-2.
149
DRIVEABILITY - DIESEL
Symptom List:
P2066-MASS AIR FLOW SENSOR PLAUSIBILITY
P2355-EGR FLOW RATE IS TOO HIGH
P2355-EGR FLOW RATE IS TOO LOW
Test Note:
All symptoms listed above are diagnosed using the same tests.
The title for the tests will be P2066-MASS AIR FLOW SENSOR
PLAUSIBILITY.
When Monitored and Set Condition:
P2066-MASS AIR FLOW SENSOR PLAUSIBILITY
When Monitored:
With the engine running.
Set Condition:
The ECM detects a rationality problem with the MAF Sensor or excessive
EGR flow.
POSSIBLE CAUSES
AIR FILTER
AIR RESTRICTION
CHECKING FOR AIR LEAKS
EGR ACTUATION - 1200 RPM
EGR VALVE
MAF SENSOR
MAF SENSOR READING - 3OOO RPM
INTERMITTENT CONDITION
EGR RESTRICTION
TEST
ACTION
APPLICABILITY
1
NOTE: If the ECM detects and stores a DTC, the ECM also stores the
engine/vehicle operating conditions under which the DTC was set. Some of
these conditions are displayed on the DRB at the same time the DTC is
displayed.
NOTE: Before erasing stored DTCs, record these conditions. Attempting to
duplicate these conditions may assist when checking for an active DTC.
Turn the ignition on.
With the DRB, erase ECM DTCs.
Test drive the vehicle and monitor the DRB for ECM DTCs.
Did this DTC set again?
All
Yes
→ Go To 2
No
→ Go To 10
150
DRIVEABILITY - DIESEL
TEST
ACTION
APPLICABILITY
2
Start and idle the engine.
With the DRBIII
t in Sensors, read the MAF mg/strk and compare it to the MAF
SPEC mg/strk with the engine at idle.
NOTE: The MAF Sensor reading should be within 5% of the MAF Spec
reading.
Is the MAF Sensor reading within 5% of the MAF Spec?
All
Yes
→ Go To 3
No
→ Go To 7
3
Place the transmission in Park or Neutral for this test.
Start the engine and increase engine the engine speed to 3000 RPM.
With the DRBIII
t in Sensors, read the MAF mg/strk and compare it to the MAF
SPEC mg/strk with the engine speed at 3000 RPM.
NOTE: The MAF Sensor reading should be within 5% of the MAF Spec
reading.
Is the MAF Sensor reading within 5% of the MAF Spec?
All
Yes
→ Go To 4
No
→ Go To 7
4
NOTE: Inspect the complete exhaust system for restriction. Restrictions in
the exhaust system can cause improper EGR flow. Repair as necessary
Allow the engine to idle until the engine reaches operating temperature.
With the DRBIII
t, actuate the EGR Positioner with the engine idling.
NOTE: The EGR Positioner will actuate from 5% to 95%. With the engine
idling at approximately 680 RPM the MAF reading should switch a mini-
mum of 200 mg/strk between 5% and 95% of EGR actuation.
Note the MAF readings.
Does the MAF switch a minimum of 200 mg/strk between 5% and 95% of EGR
actuation?
All
Yes
→ Go To 5
No
→ Go To 6
5
Allow the engine to idle until the engine reaches operating temperature.
With the DRBIII
t, actuate the EGR Positioner with the engine speed at 1200 RPM.
NOTE: The EGR Positioner will actuate from 5% to 95%. With the engine
speed at approximately 1200 RPM the MAF reading should switch a mini-
mum of 200 mg/strk between 5% and 95% of EGR actuation.
Note the MAF readings.
Does the MAF switch a minimum of 200 mg/strk between 5% and 95% of EGR
actuation?
All
Yes
→ No problem found. Test complete.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Go To 6
6
Turn the ignition off.
Remove the EGR valve and check the valve and flow passages for debris or other
restrictions.
Were any problems found?
All
Yes
→ Clean or repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Replace the EGR Valve.
Perform ROAD TEST VERIFICATION - VER-2.
151
DRIVEABILITY - DIESEL
P2066-MASS AIR FLOW SENSOR PLAUSIBILITY —
Continued
TEST
ACTION
APPLICABILITY
7
Turn the ignition off.
Remove and inspect the Air Filter for soiling or excessive dirt and debris which may
cause air flow restriction.
Were any of these problems found?
All
Yes
→ Replace the Air Filter element.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Go To 8
8
NOTE: Inspect all air intake and turbocharger related tubes for damage,
restriction or poor connection. Any of these conditions can cause a this DTC
to set.
NOTE: Inspect the exhaust system and related tubes for damage, restriction
or poor connection. Any of these conditions can cause a this DTC to set.
Turn the ignition off.
Inspect the intake system, exhaust system and related tubes and connections.
Were any problems found?
All
Yes
→ Repair or replace as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Go To 9
9
Turn the ignition off.
Remove the Intake Air Temperature Sensor.
Connect smoke machine 84-04 to the Intake Air Temperature Sensor port in the
intake duct and begin injecting smoke into the intake system.
Observe all intake system components for evidence of smoke leakage.
Is there evidence of smoke leakage?
All
Yes
→ Repair or replace as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Replace the MAF Sensor.
Perform ROAD TEST VERIFICATION - VER-2.
10
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
With the engine running at normal operating temperature, monitor the DRB
parameters related to the DTC while wiggling the wiring harness. Look for param-
eter values to change and/or a DTC to set.
Review the DTC When Monitored and Set Conditions. If possible, try to duplicate the
conditions under which the DTC was set.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wiring harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wiring harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
All
Yes
→ Repair as necessary.
Perform ROAD TEST VERIFICATION - VER-2.
No
→ Test Complete.
152
DRIVEABILITY - DIESEL
P2066-MASS AIR FLOW SENSOR PLAUSIBILITY —
Continued
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