NHTSA ID Number: 10235283
Manufacturer Communication Number: KC-2191
TSB/Document Date: 2023-05-02
Summary
CBR: Volvo
NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions. The primary failure mode the NOx Sensors is internal failure, which will generate a sensor specific fault code.
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Article
Volvo NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer
Emissions
Component Overview
NOX SENSOR
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There are two Nitrogen Oxide (NOx) sensors in the Exhaust Aftertreatment System, an INLET and
OUTLET. They are smart sensors reporting on the DL7 (J1939-7) data link and they measure the
INLET (Pre SCR) and OUTLET (Post SCR) of NOx. The NOx sensors have unique CAN identification
numbers and cannot be swapped. Additionally these sensors are not operational until the exhaust is up
to operating temperature and free of moisture. The Engine Control Module compares the INLET and
OUTLET NOx readings to evaluate the efficiency of the SCR.
The primary failure mode the NOx Sensors is internal failure, which will generate a sensor specific fault
code.
Diagnosis and Repair
Review the tables below to determine which category the Fault Code currently being diagnosed falls
under. Proceed according to the instructions for the appropriate section.
INLET NOx Sensor (NOx1) Diagnostic Trouble Codes - Sensor Failure
REPLACE the sensor if any codes in red below are active and/or confirmed. Do not replace for inactive
codes.
Fault Code
Fault Description
P220013
NOx Sensor Bank 1 Sensor 1, Circuit Open
P220300
NOx Sensor Circuit High Bank 1 Sensor 1
P220513
NOx Sensor Gas Inlet Open Circuit, Circuit open
P220600
NOx sensor heater control circuit low, bank 1 sensor 1
P220800
NOx sensor heater sense circuit, bank 1 sensor 1
P220E93 NOx Sensor Heater Control Circuit Range/Performance (Bank 1 Sensor 1), No operation
NOx Sensor Performance - Sensing Element Bank 1 Sensor 1, Performance or Incorrect
P22FB92
Operation
Direction/Repair: Replace the sensor in accordance with Impact instructions.
UI
; Live
Do NOT Cut the sensor wiring harness, all NOx sensors are currently on mandatory return.
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Inlet NOx Sensor (NOx1) Diagnostic Trouble Codes - Potential Sensor
Failure
These codes in yellow below indicate that the inlet NOx sensor is potentially damaged, but further
investigation is required to verify sensor condition.
Fault Code
P026C00
P026D00
P220164
P225C00
Fault Description
Fuel Injection Quantity Lower Than Expected
Fuel Injection Quantity Higher Than Expected
NOx Sensor Bank 1 Sensor 1, Signal plausibility failure
NOx Sensor Performance - Signal Stuck High Bank 1 Sensor 1
Direction: Run the applicable PTT Operation per OBD Level.
Emission Level
OBD13 to OBD16
OBD17 and OBD18
VGT Only
OBD17 and OBD18
TC Only
OBD19 and Newer
VGT Only
PTT Operation
2549-08-03-03 NOx Conversion Test
2589-08-03-18 Exhaust Aftertreatment System Analysis
(Make sure NOx Subtest is selected)
No test… Replace INLET (NOx1) NOx Sensors if not replaced within past 3
months and release truck.
If the NOx sensor has been replaced within past 3 months open an E-Service
Case.
2549-08-03-03 NOx Conversion Test
OR (whichever is available)
2589-08-03-18 Exhaust Aftertreatment System Analysis (only NOx Subtest
available)
OBD19 and Newer
TC Only
2549-08-03-03 NOx Conversion Test
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• If the INLET (NOx1) sensor fails the evaluation, replace the Inlet NOx Sensor ONLY.
• If the NOx2 sensor (Outlet NOx Sensor) fails the test, disregard the results.
OUTLET NOx Sensor (NOx2) Diagnostic Trouble Codes - Sensor Failure
REPLACE the sensor if any codes in red table below are active and/or confirmed. Do not replace for
inactive codes.
Fault Code
P220F93
P229E13
P22A100
P22A313
P22A400
P22A600
P22FE00
Fault Description
NOx Sensor Incorrect Value at Startup, No operation
NOx Sensor Bank 1 Sensor 2, Circuit open
NOx Sensor Circuit High Bank 1 Sensor 2
NOx Sensor Heater Control Bank 1 Sensor 2, Circuit open
NOx sensor heater control circuit low, bank 1 sensor 2
NOx sensor heater sense circuit, bank 1 sensor 2
NOx Sensor Performance - Sensing Element Bank 1 Sensor 2
Direction/Repair: Replace the sensor in accordance with Impact instructions.
Do NOT Cut the sensor wiring harness, all NOx sensors are currently on mandatory return.
Outlet NOx Sensor (NOx2) Diagnostic Trouble Codes - Potential Sensor
Failure
Fault Code
P113600
P225E00
Fault Description
NOx Sensor 1/2 Correlation Calibration Error Bank 1
NOx Sensor Performance - Signal Stuck High Bank 1 Sensor 2
Direction: Run the applicable PTT Operation per OBD Level.
; Live UI
Emission Level
PTT Operation
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OBD13 to OBD16
OBD17 and OBD18
VGT Only
OBD17 and OBD18
TC Only
2549-08-03-03 NOx Conversion Test
2589-08-03-18 Exhaust Aftertreatment System Analysts (make sure NOx and
SCR Subtest are selected)
No test… Replace Outlet (NOx2) NOx Sensors if not replaced within past 3
months and release truck.
If NOx sensor has been replaced within past 3 months open an E-Service Case.
2549-08-03-03 NOx Conversion Test
OBD19 and Newer
VGT Only
OR (whichever is available)
2589-08-03-18 Exhaust Aftertreatment System Analysts (only NOx Subtest
available)
OBD 19 and Newer
TC Only
2549-08-03-03 NOx Conversion Test
Repair:
• If the Outlet (NOx2) sensor fails the evaluation, replace the Outlet NOx Sensor ONLY.
• If the NOx1 sensor (Inlet NOx Sensor) fails the test, disregard the results.
Diagnostic Trouble Codes With "NOx Sensor" in the Description
Direction/Repair: DO NOT REPLACE the NOx sensor(s) for these codes. Diagnostics should be
performed using PTT Diagnostics and the comment section in the table below.
Fault Code
P220A1C
P220B1C
P225D00
P225F00
; Live UI
Fault Description
Comments
NOx Sensor Supply Voltage Circuit (Bank 1 Sensor 1), Circuit
Power supply
voltage out of range
NOx Sensor Gas Outlet High Voltage, Circuit voltage out of
Power supply
range
NOx Sensor Performance - Signal Stuck Low Bank 1 Sensor 1 Sensor reading fresh air
NOx Sensor Performance - Signal Stuck Low Bank 1 Sensor 2 Sensor reading fresh air
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P229F64
NOx Sensor Gas Outlet Removed, Signal plausibility failure
U029D00
U029E00
Lost Communication With NOx Sensor "A"
Lost Communication with NOx Sensor "B"
Nuisance code, most
likely “Confirmed =
False”
Most likely Harness Issue
Most likely Harness Issue
Although the codes above have the term "NOx sensor" in their descriptions, it is highly unlikely that the
sensor is the cause of any of these codes. The table above specifies the likely cause of each code.
Rules for Replacement
Warranty will only cover replacement of the NOx Sensors if one of the codes in Red or Yellow listed
above is active or confirmed. If the NOx Sensor is suspected to have failed with no active or confirmed
codes, an eService case is required for further evaluation.
Standard Diagnostic Time for a NOx Sensor is 1.0 hr.
Tags
p2200-13
p2203-00
p2205-13
p2206-00
p2208-00
p026d-00
p2201-64
p225c-00
p220f-93
p229e-13
p220a-1c
p220b-1c
p225d-00
p225f-00
u029d-00
u029e-00
p229f-64
p22fb-92
p220e-93
p22a6-00
p22a1-00
p22a3-13
p22a4-00
p22fe-00
p225e-00
p20ee-00
p103c-00
p207f-00
unlocking uptime
; Live UI
p220800
p026c00
p026d00
p026c-00
p220164
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p225c00
p220f93
p229e13
p22a600
p22a100
p22fb92
p220e93
p220013
p220300
p220513
p220600
p22a400
p22fe00
p113600
p1136-00
p225e00
p22a313
Categories
Make and Model > Volvo > VNL
Make and Model > Volvo > VNR
Make and Model > Volvo > VNM
Make and Model > Volvo > VNX
Make and Model > Volvo > VAH
Make and Model > Volvo > VHD
Vehicle System > Emissions
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TSB/Document ID: KC-2191
Replacement Service Bulletin Number:
MFR Communication Date: 2023-04-18
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ENGINE AND ENGINE COOLING
MFR Component System:
MFR Component Subsystem:
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