Just got P1A42 and U0100 DTC

[rjinaz]

Got this lovely DTC this morning after getting gas.

I was able to clear it with Forscan and it didn't come back after I restarted the truck.
Should I be worried?

Code: P1A42 - Propulsion System Status Signal Performance

Status (-A8):
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is On for this DTC

Module: Battery Energy Control Module

Freeze Frame #1:
-EVENT_TIME: 42751845 s (Tue Sep 10 08:59:28 2024) - Event time
-TOTAL_DISTANCE: 11781 miles - Total Distance
-MODULE_VOLTAGE: 12.3 V - Control Module Voltage
-BAT_COOL_INLETTEMP: 99 °F - Hybrid/EV Battery Coolant Inlet Temperature
-RPM: 0 1/min - Engine Revolutions Per Minute
-BATCURBECM: 0.12 A - Hybrid Battery Current
-LEAK_RES_OVERALL: 0 Ω - Leakage Resistance (Overall)
-BATT_CHAR [SOC]: 49.05 % - Battery Pack State of Charge (SOC)
-VPWR: 12.45 V - Control Module Voltage
-H_BATT_TEMP: 117 °F - Hybrid Battery Temperature
-BAT_PACK_VOLT: 277.93 V - Hybrid Battery Pack Voltage
-HEVVARCHAR: 1.44 % - Hybrid Battery Variation in State of Charge Between Battery Modules
-HEVAVEVOLT: 3.66 V - Hybrid Battery Average Battery Module Voltage
-HEV_BAT_MIN_V: 3.66 V - Hybrid Battery - Minimum Battery Module Voltage
-HEV_BAT_VAR_V: 0.01 V - Hybrid Battery - Variation In Voltage Measurement Between Battery Modules
-BATTAGEBECM: 16 - Battery Age in Months
-PUTMR: 7 min - Time Since Module (ECU) Power Up Or Reset
-NEG_CON_FAULT: No Fault - Negative Contactor Fault Status
-NEG_CON_DEM: Open - Negative Contactor Output Demanded
-MAIN_CON_INP: Open - Main Positive Contactor Input Status
-MAIN_CON_FAULT: No Fault - Main Positive Contactor Fault Status
-MAIN_CON_DEM: Open - Main Positive Contactor Output Demanded
-CON_REQ_COM: Open - Vehicle Contactor Request Command
-CON_ENA_IND: Closed - Contactor System Enable Output Indicated
-NEG_CON_INP: Open - Negative Contactor Input Status
-NEG_VOLT_STAT: No Fault - Negative Contactor Voltage Sensor Fault Status
-POS_VOLT_STAT: No Fault - Positive Contactor Voltage Sensor Fault Status
-PRE_CON_DEM: Open - Precharge Contactor Output Demanded
-SHUTDO_A_DEM: Off - Rapid Shutdown 'A' Demanded
-VOLT_INT_INP: Closed - High Voltage Interlock Input Status
-PRE_CON_IND: Open - Precharge Contactor Output Indicated
-POWER_SUST_INP: On - Vehicle Power Sustain Input Status
-NEG_CON_IND: Open - Negative Contactor Output Indicated
-MAIN_CON_IND: Open - Main Positive Contactor Output Indicated
-FUEL_CUTOFF-INP: Enabled - Fuel Cutoff Input Status
-CON_ENA_DEM: Open - Contactor System Enable Output Demanded
-SHUTDO_B_DEM: Off - Rapid Shutdown 'B' Demanded
-IFC: B - Internal Module Fail Code
-BECM_Hyb/EVBatPckLfTme: 108 - Hybrid/EV Battery Pack Lifetime Charge Out (Throug
-MIN_ECU_TEMP: 111 °F - Minimum Module Temperature
-DELTA_ECU_TEMP: 37 °F - Delta Module Temperature
-BECM_Bit6Reserved: FAULT - Bit6: Reserved
-BECM_Bit7Reserved: FAULT - Bit7: Reserved
-BECM_RCPOvrchrge: FAULT - RCP Over-Charged
-BECM_RCPOvrDschrge: FAULT - RCP Over-Discharged
-BECM_RCPPwrSupExc: FAULT - RCP Power Supply IC exceptions: VCCA_TSD (Thermal
-BECM_RCPSlwReset: FAULT - RCP Slow Reset - Micro exceptions with 60s timer (
-BECM_RCPUnMonBMICFlt: FAULT - RCP Unmonitored BMIC Faulty
-BECM_RCPUnMonOpnWr: FAULT - RCP Unmonitored Open Wire
-BECM_ISOPrvtCtrPwrSts: 128 - ISO - Prevent Contactor Power Status
-BECM_NegCntEnbSts: error - ISO - Negative Contactor Enable Status
-BECM_PosCntEnbSts: 128 - ISO - Positive Contactor Enable Status
-BECM_PrecrgCntEnbSts: error - ISO - Pre-Charge Contactor Enable Status
-BECM_ISORstTypState: 2 - ISO - BECM Reset Type State






Code: U0100 - Lost Communication With ECM/PCM A

Status (-28):
- Previously Set DTC - Not Present at Time of Request
- Malfunction Indicator Lamp is Off for this DTC

Module: DC to DC Converter Control Module

Freeze Frame #1:
-EVENT_TIME: 42751848 s (Tue Sep 10 08:59:32 2024) - Event time
-TOTAL_DISTANCE: 11781 miles - Total Distance
-MODULE_VOLTAGE: 12.3 V - Control Module Voltage
-INCAR_TEMPERATURE: 32 °F - In car temperature

Sponsored

 

[fordtruckman2003]

If it triggers the CEL, it will be something to look at if it returns.
All the random communication codes don't mean anything and clear on their own with nothing to worry about.

 

[KW58]

@rjinaz I came onto the forums to search for this code after a recent experience...when I saw the search result for your post I had brief a deja vu moment where I asked myself "did I already post something about this and just forgot"?

9SEP (the day before yours apparently), I got the same code, also right after getting gas...also on a '23, though mine is an XLT)? Mine triggered a CEL, I pulled the code after I got home and also got "not present at time of request". Made an appointment to have the dealer check it out, but the CEL light went out on its own a day or two later (I intentionally did not clear the code) so i delayed the appointment to when it was more convenient for me.

Made it into the dealership today and although they weren't going to do any extensive troubleshooting without the CEL being active, they did pull the codes...did not come back with a P1A42 (current or previous). It's like the truck cleared the code itself. I'll probably get out the laptop and FORSCAN this weekend to double check that it's not still saved somewhere deep in there (not sure if the dealership scanned the BECM), but the similarity between our experiences (within 24 hrs of eachother, right after refuel, this doesn't appear to be a common code on other forum threads) makes me wonder if it was some kind of software glitch.

I'm assuming yours hasn't come back?

 

[rjinaz]

@rjinaz I came onto the forums to search for this code after a recent experience...when I saw the search result for your post I had brief a deja vu moment where I asked myself "did I already post something about this and just forgot"?

9SEP (the day before yours apparently), I got the same code, also right after getting gas...also on a '23, though mine is an XLT)? Mine triggered a CEL, I pulled the code after I got home and also got "not present at time of request". Made an appointment to have the dealer check it out, but the CEL light went out on its own a day or two later (I intentionally did not clear the code) so i delayed the appointment to when it was more convenient for me.

Made it into the dealership today and although they weren't going to do any extensive troubleshooting without the CEL being active, they did pull the codes...did not come back with a P1A42 (current or previous). It's like the truck cleared the code itself. I'll probably get out the laptop and FORSCAN this weekend to double check that it's not still saved somewhere deep in there (not sure if the dealership scanned the BECM), but the similarity between our experiences (within 24 hrs of eachother, right after refuel, this doesn't appear to be a common code on other forum threads) makes me wonder if it was some kind of software glitch.

I'm assuming yours hasn't come back?

Hasn’t come back.
I did end up replacing my battery after seeing a low state of charge and it failed on an amp load test.
No issues after that.

Sponsored