Volvo All Engines (2010 Emissions) Fault Code: SPN 626 FMI 4 PID: 45 Intake Air Heater (IAH) Relay
The preheat Relay controls the preheater from an electric signal from the Engine Control Module (ECM). This function is used to warm up the inlet air during cold conditions. This provides more reliable starting and reduces exhaust emissions during cold starts. Vehicles can be equipped with or without the preheater.
Conditions for diagnostic trouble code (DTC):
1) Output activated
2) Short circuit to battery voltage on A14.EB:25
Observable symptoms
1) Intake air heater (IAH) relay never activated
2) Difficult to start in extreme cold
3) White smoke at cold start
Probable cause
1) Engine wiring harness
2) Connector
3) Intake air heater (IAH) relay
Related products
-
-
-
Allison 1000 & 2000 Gen 5 Fault Code:U0100 Lost Communication With ECM A
1000 & 2000 Gen 5 -
-
-
-
-
-
-
Allison 1000 & 2000 Gen 5 Fault Code:P2763 TCC PCS Control Circuit High
1000 & 2000 Gen 5 -
-
-
-
-
-
Volvo All Engines (2010 Emissions) Fault Code: SPN 100 FMI 5 PID: Engine Oil Pressure
All Engines (2010 Emissions) -
-
-
-
-
-
-
Volvo All Engines (2010 Emissions) Fault Code: SPN 2003 FMI 9 PID: PSID 205 Transmission Control Module (TCM) Status
All Engines (2010 Emissions) -
-
Volvo All Engines (2013 Emissions) Fault Code: P262611 PID: EMS O2 Sensor Positive Current Trim Bank 1 Sensor 1
All Engines (2013 Emissions) -
-
Volvo All Engines (2013 Emissions) Fault Code: P066601 PID: EMS Control Module Internal Temperature Sensor “A”
All Engines (2013 Emissions) -
-
-
