KC-2116
Service Bulletin Details
Public Details for: KC-2116
Nox sensor troubleshooting guide - us10+obd13 and newer emissions.
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6/30/22, 11:05 AM Article NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions Component Overview 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 (NOx 1) 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 NOx Sensor Performance - Sensing Element Bank 1 Sensor 1, Performance or Incorrect Operation NOx Sensor Heater Control Circuit Range/Performance (Bank 1 P220E-93 Sensor 1), No operation P22FB-92 P2200-13 P2203-00 P2205-13 P2206-00 NOx Sensor Bank 1 Sensor 1, Circuit Open NOx Sensor Circuit High Bank 1 Sensor 1 NOx Sensor Gas Outlet Open Circuit, Circuit open NOx sensor heater control circuit low, bank 1 sensor 1 P2208-00 NOx sensor heater sense circuit, bank 1 sensor 1 ; Live UI Direction/Repair: Replace the sensor in accordance with Impact https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD8?pyActivity=%40basec… 1/6 6/30/22, 11:05 AM Article instructions. Do NOT Cut the sensor wiring harness, all NOX sensors are currently on mandatory return. Inlet NOx Sensor (NOx 1) 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 Fault Description P026C-00 Fuel Injection Quantity Lower Than Expected P026D-00 Fuel Injection Quantity Higher Than Expected P2201-64 NOx Sensor Bank 1 Sensor 1, Signal plausibility failure P225C-00 NOx Sensor Performance - Signal Stuck High Bank 1 Sensor 1 Direction: Run the applicable PTT Operation per OBD Level. Emission Level OBD 1316 OBD 1718 VGT Only OBD 1718 TC Only PTT Operation 2549-08-03-03 Nox Conversion Test 2589-08-03-18 Exhaust Aftertreatment System Analysts (make sure Nox Subtest is selected) No test… Replace INLET (Nox 1) 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 OBD 19 and OR (whichever is available) Newer VGT Only 2589-08-03-18 Exhaust Aftertreatment System Analysts (only Nox Subtest available) OBD 19 and 2549-08-03-03 Nox Conversion Test Newer TC Only ; Live UI https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD8?pyActivity=%40basec… 2/6 6/30/22, 11:05 AM Article Repair: • 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 (NOx 2) 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 Fault Description P220F-93 NOx Sensor Incorrect Value at Startup, No operation P229E-13 NOx Sensor Bank 1 Sensor 2, Circuit open P22A6-00 NOx sensor heater sense circuit, bank 1 sensor 2 P22A1-00 NOx Sensor Circuit High Bank 1 Sensor 2 P22A3-13 NOx Sensor Heater Control Bank 1 Sensor 2, Circuit open P22A4-00 NOx sensor heater control circuit low, bank 1 sensor 2 P22FE-00 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 (NOx 2) Diagnostic Trouble Codes Potential Sensor Failure Fault Code Fault Description P225E-00 NOx Sensor Performance - Signal Stuck High Bank 1 Sensor 2 Direction: Run the applicable PTT Operation per OBD Level. Emission PTT Operation Level OBD 132549-08-03-03 NOx Conversion Test 16 OBD 172589-08-03-18 Exhaust Aftertreatment System Analysts (make 18 VGT sure NOx and SCR Subtest are selected) Only OBD 17- No test… Replace Outlet (NOx 2) NOx Sensors if not replaced UI ; Live18 TC within past 3 months and release truck. If NOx sensor has been Only replaced within past 3 months open an E-Service Case https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD8?pyActivity=%40basec… 3/6 6/30/22, 11:05 AM Only Article replaced within past 3 months open an E-Service Case. OBD 19 and Newer VGT Only 2549-08-03-03 NOx Conversion Test 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 (NOx 2) sensor fails the evaluation, replace the Outlet NOx Sensor ONLY. • If the NOx 1 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 P220A-1C P220B-1C Fault Description Comments NOx Sensor Supply Voltage Circuit (Bank 1 Sensor 1), Circuit voltage out of range NOx Sensor Gas Outlet High Voltage, Circuit voltage out of range Power supply Power supply Sensor reading fresh air Sensor reading fresh air P225D-00 NOx Sensor Performance - Signal Stuck Low Bank 1 Sensor 1 P225F-00 NOx Sensor Performance - Signal Stuck Low Bank 1 Sensor 2 U029D-00 Lost Communication With NOx Sensor "A" UI U029E-00 ; Live Lost Communication with NOx Sensor B Most likely Harness Issue Most likely Harness Issue https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD8?pyActivity=%40basec… 4/6 6/30/22, 11:05 AM Article P229F-64 NOx Sensor Gas Outlet Removed, Signal Nuisance plausibility failure code, most likely “Confirmed = False” 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. Review the video link below. MACK VOLVO NOx Sensor NOx Sensor Standard Diagnostic Time for a NOx Sensor is 1.0 hr. Tags p2200-13 p2203-00 p2205-13 p2206-00 p2208-00 p026c-00 p026d-00 p2201-64 p225c-00 p220f-93 p229e-13 p220a-1c p220b-1c ; Live UI p225d-00 p225f-00 u029d-00 u029e 00 p229f 64 p22fb 92 p220e 93 https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD8?pyActivity=%40basec… 5/6 6/30/22, 11:05 AM p229f-64 p22fb-92 p22a6-00 p22a1-00 p22a3-13 p22a4-00 p22fe-00 p225e-00 p20ee-00 p103c-00 p207f-00 volvo mack Related links and attachments No links or attachments available p220e-93 Article u029e-00 unlocking uptime Feedback Give feedback to help improve the content of this article ; Live UI https://volvo-trkna-prod1.pegacloud.net/prweb/PRAuth/app/VolvoKM_/iNPUIKpeinqPJi2G0hH930k43USdE1gb*/!TABTHREAD8?pyActivity=%40basec… 6/6