Section 83.3
Troubleshooting Flash Code 83
This code indicates the component temperature or pressure went above calibrated limits. Possible causes include:
- Code 173/0
- Restricted muffler/converter, exhaust
- Injector (s)
- Code 412/154/0
- EGR valve leaking
- EGR cooler
- Low coolant
- Restricted air filter
- Injector (s)
- Code 411/155/0
- EGR valve leaking
- Restricted exhaust components (muffler/converter)
The following procedure will troubleshoot Flash Code 83 for the EGR system.
Section 83.3.1
Check for Other Codes
- Turn ignition ON.
- Plug in DT.
- Read active codes.
- If a codes 63 (s 060) or 31 (s 52) are logged with 412 or 411 (or 154/155), service those codes first.
- If codes 63 (s 060) or 31 (s 52) are not logged, continue this procedure. Refer to "83.3.2 Vehicle Air Test" .
Section 83.3.2
Vehicle Air Test
The test for vehicle air system was performed during EGR-1. Refer to "10.16 Exhaust Gas Recirculation System (EGR-1) – Fault, Series 50 Engine" for Series 50 engines. For Series 60 engines, refer to "10.18 Exhaust Gas Recirculation System Basic Checks for Series 60 Engines" .
- If the test for vehicle air system performed during EGR-1 did not pass, resolve low vehicle air pressure.
- If the test for vehicle air system performed during EGR-1 passed, replace the EGR valve and refer to "83.3.3 Verify Repairs" .
Section 83.3.3
Verify Repairs
Perform the following steps to verify repairs for the EGR valve:
- Connect all connectors.
- Start and run the engine.
- Road test the engine.
- If code 83 was not logged, no further troubleshooting is required.
- If code 83 was logged, please review this section from the first step to find the error. Refer to "83.3.1 Check for Other Codes" . If this is the second time through the procedure, call Detroit Diesel Technical Service, or try a test ECM.
DDEC III/IV Single ECM Troubleshooting Guide - 6SE497 |
Generated on 10-13-2008 |