C7.1 Engines and Generator Sets Caterpillar

Codes that Inhibit Operation of Aftertreatment System

Usage:

C7.1 770

Diagnostic Trouble Codes that Affect the Aftertreatment System and the Conditions for Clearing the Code

The following tables list the codes that inhibit the aftertreatment system either during the current key cycle or through successive key cycles.

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Table 1
Codes That Clear With Each Key Cycle
J1939 Code	CDL Code	Customer Action	Clearing Conditions
102-16	E1044 (2)	Cycle key OFF for 2 minutes and then run engine per Clearing Conditions	Engine Speed >1400/1500 RPM
102-18	E1045 (2)	Cycle key OFF for 2 minutes and then run engine per Clearing Conditions	Engine Speed >1400/1500 RPM
105-3	172-3	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
105-4	172-4	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
108-3	274-3	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
108-4	274-4	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
108-13	274-13	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
110-0	E361 (3)	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
110-3	110-3	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
110-4	110-4	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
110-15	E361 (1)	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
110-16	E361 (2)	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
157-3	1797-3	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
157-4	1797-4	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
157-16	E396 (2)	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
157-18	E398 (2)	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
168-2	168-2	Cycle key OFF for 30s then START engine	Run engine > 3 Seconds
168-3	168-3	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
168-4	168-4	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
172-3	2526-3	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
172-4	2526-4	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
174-16	E363 (2)	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
651-2	1-2	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
651-5	1-5	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
651-6	1-6	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
652-2	2-2	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
652-5	2-5	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
652-6	2-6	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
653-2	3-2	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
653-5	3-5	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
653-6	3-6	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
654-2	4-2	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
654-5	4-5	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
654-6	4-6	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
655-2	5-2	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
655-5	5-5	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
655-6	5-6	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
656-2	6-2	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
656-5	6-5	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
656-6	6-6	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
1188-5	526-5	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
1188-6	526-6	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
1239-0	E499 (3)	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
2791-6	3405-6	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
2791-7	E1121 (2)	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
3241-3	3485-3	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3241-4	3485-4	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3242-3	2452-3	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
3242-4	2452-4	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
3358-3	3385-3	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
3358-4	3385-4	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
3358-13	3385-13	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)
3479-5	2461-5	Cycle key OFF for 30s then START engine and perform a Forced Regeneration	Successful Forced Regeneration
3479-6	2461-6	Cycle key OFF for 30s then START engine and perform a Forced Regeneration	Successful Forced Regeneration
3480-3	2460-3	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3480-4	2460-4	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3487-5	2489-5	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3487-6	2489-6	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3487-7	2489-7	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3563-3	1785-3	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3563-4	1785-4	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3609-13	3464-13	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3837-13	3493-13	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
5423-5	3427-5	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
5423-6	3427-6	Cycle key OFF for 30s then START engine and perform a Forced Regeneration	Successful Forced Regeneration
5571-0	E1264 (2)	Cycle key OFF for 2 minutes then key ON	Circuit Check (Auto)

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Table 2
Codes That Stay Active Through Key Cycles
J1939 Codes	CDL Codes	Customer Action	Clearing Conditions
27-3	3407-3	Cycle key OFF for 2 minutes and then run engine per Clearing Conditions	Rectification completed and NRS system operating OK.
27-4	3407-4	Cycle key OFF for 2 minutes and then run engine per Clearing Conditions	Rectification completed and NRS system operating OK.
108-21	274-21	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
2791-5	3405-5	Code must be cleared with the electronic service tool	The electronic service tool is required.
3473-31	E1025 (2)	Cycle key OFF for 30s then START engine and perform a Forced Regeneration	Successful Forced Regeneration
3474-14	E1026 (1)	Cycle key OFF for 30s then START engine and perform a Forced Regeneration	Successful Forced Regeneration
3474-31	E1026 (2)	Cycle key OFF for 30s then START engine and perform a Forced Regeneration	Successful Forced Regeneration
3480-16	E1050 (2)	Service is required, contact local Caterpillar ^® dealership	Troubleshooting procedure and Caterpillar^® Electronic Technician (Cat ET) Service Test Required
3480-18	E1052 (2)	Service is required, contact local Caterpillar ^® dealership	Troubleshooting procedure and Caterpillar^® Electronic Technician (Cat ET) Service Test Required
3488-3	2490-3	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3488-4	2490-4	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3609-18	E1154 (2)	Cycle key OFF for 30s then START engine and IDLE engine for 30 seconds	Run engine > 30 Seconds
3703-31	E993 (2)	Inhibit Switch is Preventing Regeneration	Allow Regeneration
3711-31	E593 (2)	Cycle key OFF for 30s then START engine and perform a Forced Regeneration	Successful Forced Regeneration
3714-31	E992 (3)	Cycle key OFF for 30s then START engine and perform a Forced Regeneration	Successful Forced Regeneration
3715-31	E991 (3)	Service is required, contact local Caterpillar ^® dealership	Troubleshooting procedure and Caterpillar^® Electronic Technician (Cat ET) Service Test Required
3837-3	3493-3	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3837-4	3493-4	Cycle key OFF for 30s then key ON	Circuit Check (Auto)
3837-21	3493-21	Cycle key OFF for 30s then key ON	Circuit Check (Auto)