Volvo All Engines (2010 Emissions) Fault Code: SPN 626 FMI 3 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:P2761 TCC PCS Control Circuit Open
1000 & 2000 Gen 5 -
-
Allison 1000 & 2000 Gen 5 Fault Code:U0074 CAN Communications BUS 2 Off
1000 & 2000 Gen 5 -
-
-
-
-
-
-
-
-
-
Volvo All Engines (2013 Emissions) Fault Code: P020312 PID: EMS Cylinder 3 Injector “A”
All Engines (2013 Emissions) -
-
-
-
-
-
-
-
Volvo All Engines (2010 Emissions) Fault Code: SPN 102 FMI 9 PID: Engine Intake Manifold
All Engines (2010 Emissions) -
CAT 3406E (Prefix 5DS or 1LW) Fault Code: 67 PID: 51 SPN: FMI: 5 Auxiliary Output #03 current low
3406E (Prefix 5DS or 1LW) -
-
Volvo All Engines (2017 Emissions) Fault Code: P020156 PID: EMS Cylinder 1 Injector “A”
All Engines (2017 Emissions) -
-
-
-
-
-
