2002 3.8 Bird - Reduced Engine Power - Lots of Codes
#1
03-14-2020 | 06:19 PM
Thread Starter
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In the Staging Lanes
Joined: Oct 2005
Posts: 33
From: Florida
2002 3.8 Bird - Reduced Engine Power - Lots of Codes
Hi All
I have a 2002 3.8 Firebird that suddenly went into reduced power mode after a one hour trip.
100% stock, intake gaskets already replaced (common issue), battery and alternator are fine.
Fires right up, then a few feet down road the mode kinks in.
It will accel slowly and run mostly fine, just slow like Im not giving throttle.
Codes are;
P1518 - Throttle Actuator Control (TAC) Module Serial Data Circuit
P0155 - Heated Oxygen Sensor (HO2S) heater circuit Bank 2 Sensor 1
P0404 - EGR fault - Ill likely try cleaning, but know this wouldnt be the source of limp mode as Ive had many of this code between Fbodies
U1000 - Class 2 data link malfunction
P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) - IIRC I have a lower degree stat
C0240 - Powertrain Control Module Traction Control Not Allowed
Appreciate any help
I have a 2002 3.8 Firebird that suddenly went into reduced power mode after a one hour trip.
100% stock, intake gaskets already replaced (common issue), battery and alternator are fine.
Fires right up, then a few feet down road the mode kinks in.
It will accel slowly and run mostly fine, just slow like Im not giving throttle.
Codes are;
P1518 - Throttle Actuator Control (TAC) Module Serial Data Circuit
P0155 - Heated Oxygen Sensor (HO2S) heater circuit Bank 2 Sensor 1
P0404 - EGR fault - Ill likely try cleaning, but know this wouldnt be the source of limp mode as Ive had many of this code between Fbodies
U1000 - Class 2 data link malfunction
P0128 - Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) - IIRC I have a lower degree stat
C0240 - Powertrain Control Module Traction Control Not Allowed
Appreciate any help
#3
03-17-2020 | 06:14 AM
Newbie
Joined: Feb 2020
Posts: 4
Well oka
okay...
Consider installing standard thermostat and burping the coolant, then checking the wiring and connectors that you had to disturb in all the repairs before your car started throwing codes up.
I would be looking for bent or pushed out pins in the plugs, or wires broken inside the insulation.
Consider installing standard thermostat and burping the coolant, then checking the wiring and connectors that you had to disturb in all the repairs before your car started throwing codes up.
I would be looking for bent or pushed out pins in the plugs, or wires broken inside the insulation.
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