This fault code 3385 DTCs document is a troubleshooting PDF for the Intake Manifold 1 Temperature fault, covering the sensor circuit, diagnostic conditions, INSITE checks, ECM calibration review, and clearing steps. It explains when the amber CHECK ENGINE lamp is triggered and why the fault may occur during extended idle operation with cold intake manifold temperatures.
Official fault code 3385 DTCs document details
| Brand | Cummins |
|---|---|
| Model coverage | ISX11.9 CM2250, ISX15 CM2250, GX CM2250; file listing also references ISB6.7 CM2250 (2010-12) |
| System/Group | DTCs; Intake Manifold 1 Temperature Sensor Circuit |
| Publication no. | Associated bulletin numbers 4022250 and 2883445 |
| Year/Revision | Last modified 11-Jun-2010 and 08-Dec-2010 |
| Pages | 6 |
| File size | 0.2 MB |
| Format | |
| Language | English |
Document table of contents
- Overview
- Circuit Description
- Component Location
- FAULT CODE 3385 – Intake Manifold 1 Temperature – Data Valid But Below Normal Operating Range – Moderately Severe Level
- Conditions for Running the Diagnostics
- Conditions for Setting the Fault Codes
- Action Taken When the Fault Code is Active
- Conditions for Clearing the Fault Code
- Shop Talk
- Associated Procedures
- Troubleshooting Steps
- Guided Step 1 – Check the fault codes.
- Guided Step 1A – Check for Fault Code 143.
- Guided Step 2 – Check ECM calibration and clear fault codes.
- Guided Step 2A – Check if an ECM calibration update is available.
- Guided Step 2B – Disable the fault code.
Applicable truck models
The extract identifies ISX11.9 CM2250, ISX15 CM2250, and GX CM2250 engine models in the associated procedures table, with intake manifold temperature sensor procedure 019-159 and ECM calibration code procedure 019-032. It also shows the intake manifold temperature sensor located in the air intake manifold, and states that the ECM uses a 5 volt signal circuit to determine intake manifold temperature from sensor resistance. For official brand information, see Cummins official website.
Who needs this fault code 3385 DTCs manual
This manual is for diesel technicians, fleet mechanics, and workshop owners diagnosing an amber CHECK ENGINE light where the intake manifold temperature is below a critical threshold during idle. It is useful when comparing INSITE™ electronic service tool readings with a known value or mechanical gauge, deciding whether the intake manifold temperature sensor should be replaced, and checking whether an ECM calibration update applies.
The procedure states that the diagnostic runs continuously when the engine is operating at idle and sets when intake manifold temperature is less than 20°C [68°F] for an extended period. The shop talk note says the EGR valve was closed because the engine was operating with cold intake manifold temperatures for an extended period, and that no repair is necessary when readings correlate correctly. To validate repair, the document instructs starting the engine and letting it idle for 1 minute, then confirming the fault status changes to inactive in INSITE™ electronic service tool. The full PDF is available in the DiagTechPro manuals library, free account required to download.
Related manuals library
Sản phẩm liên quan cho hãng này
Cùng brand theo taxonomy hiện có trong catalog WooCommerce.
Cummins INSITE 9.3 – The Essential Diagnostic Tool for Cummins Engines
Cummins Calterm Version 5.16 – Advanced ECM Control and Precision Tuning for Cummins Engines
Cummins InCal CE – The Calibration and Configuration Tool for Cummins Engines
