Cummins ISB CM850 (2003-06) Fault Code: 2556 PID: SID 70 SPN: 729 FMI: 4 Intake Air Heater #1 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at the intake air heater signal circuit.

Cummins ISB CM850 (2003-06) Fault Code: 2556 PID: SID 70 SPN: 729 FMI: 4 Intake Air Heater #1 Circuit – Voltage Below Normal or Shorted to Low Source. Low voltage detected at the intake air heater signal circuit.

Possible causes:

1)A shorted intake air heater relay
2)Intake air heater relay supply wire shorted to ground.

Possible repairs:

1)Replace the damaged intake air heater relay.
2)Repair or replace the OEM harness.
3)The removal and installation of the connector may correct the fault.
4)Replace the ECM.

Categories Cumminz, ISB CM850 (2003-06) Tags 06, 1, 2003, 2556, 4, 70, 729, Air, at, Below, Circuit, Circuit., CM850, Code, Cummins, Detected, Fault, FMI, Heater, Intake, ISB, Low, Normal, or, PID, Shorted, SID, signal, Source, SPN, the, to, Voltage

CLAAS CDS 7.5
CLAAS $200.00
Rated 0 out of 5
Navistar international OnCommand service information 2018 software trucks
Navistar $50.00
Rated 0 out of 5
2021 VOLVO PREMIUM TECH TOOL PTT V2.8.21 VCADS+DEVELOPER TOOL+APCI 2021/09 ( 1 PC )
Trucks software $85.00
Rated 0 out of 5
PACCAR Electronic Service Analyst 5.4.3.0 SW files 27.03.2021 software trucks
PACCAR $60.00
Rated 0 out of 5
volvo delete files 2023 33,46 GB
Trucks software $300.00
Rated 0 out of 5

Hino Diagnostic eXplorer 2 – Hino DX2 v1.1.21.4 with keygen unlocked ( Hino trucks )
Hino $60.00
Rated 0 out of 5
DOWNLOAD Volvo VODIA 5.2.50 works with VOCOM + video
Trucks software $98.00
Rated 0 out of 5
Isuzu US-IDSS 2024 Diagnostic
ISUZU $220.00
Rated 0 out of 5
Bobcat Service Analyzer 92.10 2024
Bobcat $100.00
Rated 0 out of 5
premium volvo tech tool update 2.8.150 diagnostic software 1pc
Trucks software $150.00
Rated 0 out of 5
Noregon JPRO Commercial Fleet Diagnostics 2017 v3
JPRO $35.00
Rated 0 out of 5
Bendix Acom Pro 2022 v3 ( 1 PC ) BENDIX 2022 V3
Bendix $85.00
Rated 0 out of 5
Hino DX3 2025 Diagnostic Software
Hino $95.00
Rated 0 out of 5
Perkins EST 2022A ( 1 PC )
Perkins $86.00
Rated 0 out of 5
DAF Davie Runtime v5.6.1 Davie XDc ll [02.2019] + Expire Fix 302.00 Unlock ( Windows 7 )
DAF $70.00
Rated 0 out of 5
JPRO 2022 v3 ( 1 PC )
JPRO $94.00
Rated 0 out of 5
Isuzu IDSS 2021 Diagnostic Software
ISUZU $100.00
Rated 0 out of 5
Perkins EST 2016C Electronic Service Tool
Perkins $50.00
Rated 0 out of 5
Volvo Premium Tech Tool PTT 2.8.130 Diagnostic Software 04.2022 ACPI ( 1 PC )
Trucks software $143.00
Rated 0 out of 5
VOLVO PREMIUM TECH TOOL PTT 2.7.30 Developer + Devtool + INSTALATION VIDEO!
Trucks software $60.00
Rated 0 out of 5

SERVICE MANUAL EATON CEMT (18 Speed) TRSM0011
EATON $25.00
Rated 0 out of 5
SERVICE MANUAL BOBCAT 425-428 sms
BOBCAT $57.00
Rated 0 out of 5
SERVICE MANUAL BOBCAT 440b sms
BOBCAT $45.00
Rated 0 out of 5
SERVICE MANUAL Bendix EC-30
BENDIX $17.00
Rated 0 out of 5
SERVICE MANUAL International Engines MaxxForce DT 9 10 (2014 & Newer)
INTERNATIONAL ENGINES $17.00
Rated 0 out of 5
SERVICE MANUAL DETROIT DIESEL DDEC II to III-IV Conversion
DETROIT $18.00
Rated 0 out of 5
SERVICE MANUAL Mack ASET-AI AMI (IEGR) Engine
MACK $28.00
Rated 0 out of 5
SERVICE MANUAL International Engines MaxxForce 5
INTERNATIONAL ENGINES $35.00
Rated 0 out of 5
MANUAL SERVICE DEUTZ AGROTRON 130-140-155-165 MK3
DEUTZ $37.00
Rated 0 out of 5
SERVICE MANUAL BOBCAT 953 sms
BOBCAT $40.00
Rated 0 out of 5