Looking for help working out the issue on my MK6 (06) fiesta 1.25
Sometime towards the end of last year my battery died and i got it health checked and the efficiency was very low so i decided to replace it as i wasnt sure how old it was. A couple months after replacing my ABS, handbrake light came on and the speedo stopped working, initially i thought it was a wheel speed sensor, soon after the car failed to start. I checked the voltage on the battery and i was getting 1.9V to my surprise i jump started and drove it around for a while to allow it to charge, 1 week later the same happened i had started it a few times in the week. I checked the voltage when the car was running and was getting 13.8V+ even under load so i assumed the alternator is not at fault. after turning the car off the battery maintained a voltage around 12.2-12.8V Since then its been a few weeks and hasnt died, however i am still having issues with the ABS etc. I have a feeling it is a faulty battery but it hasnt died since and the voltages seem okay so is it possible it was just the cold affecting that and the ABS is a coincidence? With the ignition on and engine off i have some trouble with forscan on reading codes etc and analysing data, i am unable to see ive data for ABS whilst engine is running. However i checked the live data of the wheel speed sensors with the engine off and it seems to register the speed on the sensors which are the same on all 4 wheels. I was thinking about replacing the ABS module but the cost is significant and i understand buying it used means it will need reprogramming? The problem is sometimes intermittent and the lights go out and the speedo works which makes me think there could be a bad connection or the battery at fault. GSF are claiming they have to send the battery away for it to be tested and i would have to buy a new one which will be refunded if the other is faulty but if not stuck with 2 batteries. Tried local Indy garage which i normally trust to which they charged me £60 to tell me that they couldnt clear the codes or find the issue so brought someone in who could clear the codes and did that. Current codes i have on forscan are :

Would it be best to change out the battery again and try that first?

 

===PCM DTC U0121-E0===
Code: U0121 - Lost Communication With The ABS Control Module

Status: 
 - DTC Present at Time of Request
 - Malfunction Indicator Lamp is On for this DTC

Module: Powertrain Control Module

===END PCM DTC U0121-E0===

===PCM DTC P1000-70===
Code: P1000 - On-Board Diagnostic (OBD) Systems Readiness Test Not Complete

Status: 
 - DTC Present at Time of Request
 - Malfunction Indicator Lamp is Off for this DTC
 - Test not complete

Module: Powertrain Control Module

Diagnostic Trouble Code details

Check of all systems is not complete since last memory clear.

--Possible Causes--
    - The vehicle is new from the factory and has not yet been through a complete OBD Drive Cycle.
    - The battery or PCM has been disconnected.
    - An OBD monitor failure had occurred prior to completion of an OBD Drive Cycle.
    - The PCM DTCs have been cleared as part of a service process.

Note: The only way P1000 can be cleared (removed) from memory is when all of the OBD monitors have been successfully completed during normal vehicle operation.

P1000 cannot be cleared from the PCM when: 1. The thermostat is stuck open and a DTC is not generated. 2. There is an open VSS circuit and a DTC is not generated. 3. If the vehicle has a Power Take Off (PTO), the circuit is shorted to VPWR or B+, or the PTO is ON during Self-test.

The purpose of the Diagnostic Trouble Code DTC P1000 is to indicate that not all of the On Board Diagnostics OBD monitors have yet been successfully completed.  You may also refer to the OBD Drive Cycle defined under the Powertrain Control/Emission Diagnosis Manual-Diagnostic Methods or the Owner's Manual.

Remember: It is not necessary to remove P1000 from the Powertrain Control Module PCM by driving the vehicle.

===END PCM DTC P1000-70===

===OBDII DTC U0121-C===
Code: U0121 - Lost Communication With The ABS Control Module

Status: 
 - Confirmed - malfunction is confirmed 

Module: On Board Diagnostic II

Diagnostic Trouble Code details

Lost Communication With The ABS Control Module

This DTC may be caused by :

Missing / Invalid CAN communication data

No CAN communications with ABS module.

CAN Communication Bus Fault (missing messages)

Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle.

Clear the DTC and repeat the self-test.

===END OBDII DTC U0121-C===

===IC DTC U0121-20===
Code: U0121 - Lost Communication With The ABS Control Module

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

Module: Instrument Cluster

Diagnostic Trouble Code details

Lost Communication With The ABS Control Module

This DTC may be caused by :

Missing / Invalid CAN communication data

No CAN communications with ABS module.

CAN Communication Bus Fault (missing messages)

Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle.

Clear the DTC and repeat the self-test.

===END IC DTC U0121-20===

===IC DTC U2197-20===
Code: U2197 - Invalid data for Vehicle Speed

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

Module: Instrument Cluster

Diagnostic Trouble Code details

Invalid data for Vehicle Speed

If Tachograph Enabled - Invalid Tachograph Input

Operator Action

Run self test.

All CMDTCs

Fix all relevant DTCs then clear codes and retest.

Note:

DTCs that start with 'U' are faults which occur during module-to-module communication.

Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle.

===END IC DTC U2197-20===

===IC DTC U2200-20===
Code: U2200 - Invalid data for Odometer

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

Module: Instrument Cluster

Diagnostic Trouble Code details

Invalid data for Odometer

Operator Action

Run self test.

All CMDTCs

Fix all relevant DTCs then clear codes and retest.

Note:

DTCs that start with 'U' are faults which occur during module-to-module communication.

Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle.

===END IC DTC U2200-20===

===RCM DTC None===
Successful DTC reading, no error codes found

Module: Restraint Control Module

===END RCM DTC None===

===ABS DTC U2012===
Code: U2012 - CAN communication bus fault

Module: Anti-Lock Brake / Traction Control Module

Diagnostic Trouble Code details

CAN communication bus fault

Operator Action

Run self test.

All CMDTCs

Fix all relevant DTCs then clear codes and retest.

Note:

DTCs that start with 'U' are faults which occur during module-to-module communication.

Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle.

===END ABS DTC U2012===

===ABS DTC B1318===
Code: B1318 - Battery voltage Low

Module: Anti-Lock Brake / Traction Control Module

Diagnostic Trouble Code details

Battery Voltage Too Low

--- Possible Causes --------

- Battery Voltage below 9.6volts

-Suspect Battery state of charge Charging system

===END ABS DTC B1318===

===ABS DTC B1342===
Code: B1342 - ECU internal fault

Module: Anti-Lock Brake / Traction Control Module

Diagnostic Trouble Code details

ECU internal fault

Low voltage to the module.

Damaged or contaminated connector

This DTC may be caused by :

Refer to the workshop manual for further diagnosis and repair.

===END ABS DTC B1342===

===ABS DTC C1267===
Code: C1267 - This code is set when an internal failure detected within the ECU

Module: Anti-Lock Brake / Traction Control Module

Diagnostic Trouble Code details

ECU internal fault

Low voltage to the module.

Damaged or contaminated connector

This DTC may be caused by :

Refer to the workshop manual for further diagnosis and repair.

===END ABS DTC C1267===

===ABS DTC B1317===
Code: B1317 - Battery Voltage Too High

Module: Anti-Lock Brake / Traction Control Module

Diagnostic Trouble Code details

Battery Voltage Too High

--- Possible Causes --------

This DTC is reported if the battery voltage is ABOVE 18.0vdc for more than five seconds.

-Assumption The battery voltage is within range.

-Suspect Battery, Battery Boost (+24vdc), Alternator/belts

Anti-Lock Indicator ON @2500rpm's ---------------------------------
 - Suspect Alternator Assembly (Stator Windings)

===END ABS DTC B1317===

===SRM DTC B1317-20===
Code: B1317 - Battery voltage High

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

Module: Speech Recognition Module

Diagnostic Trouble Code details

Battery voltage High

This code may have been set by either the use of a booster charger or a charging system fault. Use Datalogger to check the charging system voltage.

===END SRM DTC B1317-20===

===ACM DTC U0155-40===
Code: U0155 - Lost Communication With The Instrument Panel Cluster Control Module

Status: 
 - DTC Maturing - Intermittent at Time of Request
 - Malfunction Indicator Lamp is Off for this DTC

Module: Audio Control Module

Diagnostic Trouble Code details

Lost Communication With The Instrument Panel Cluster Control Module

CAN Communication Bus Fault (missing messages)

Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle.

Clear the DTC and repeat the self-test.

Check CAN Wiring/CAN Network is functioning.

===END ACM DTC U0155-40===

===ACM DTC U0238-40===
Code: U0238 - Lost Communication With Speech Recognition Module

Status: 
 - DTC Maturing - Intermittent at Time of Request
 - Malfunction Indicator Lamp is Off for this DTC

Module: Audio Control Module

Diagnostic Trouble Code details

Lost Communication With Speech Recognition Module

CAN Communication Bus Fault (missing messages)

Modules should never be replaced based only on a 'U' code. These codes do not always indicate a problem, and can be caused by normal diagnostic functions, carried out on the vehicle.

Clear the DTC and repeat the self-test.

Check CAN Wiring/CAN Network is functioning.

===END ACM DTC U0238-40===

===GEM DTC U0146-20===
Code: U0146 - Lost Communication With Gateway A

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

Module: Generic Electronic Module

===END GEM DTC U0146-20===

===GEM DTC U0155-20===
Code: U0155 - Lost Communication With The Instrument Panel Cluster Control Module

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

Module: Generic Electronic Module

===END GEM DTC U0155-20===

===GEM DTC B1342-20===
Code: B1342 - MODULE DEFECTIVE

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

Module: Generic Electronic Module

Diagnostic Trouble Code details

ECU internal fault

Possible causes are:

RAM / ROM circuit failure.

Trip Reset Switch Failure

===END GEM DTC B1342-20===

===GEM DTC B1318-20===
Code: B1318 - Battery voltage Low

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

Module: Generic Electronic Module

Diagnostic Trouble Code details

Battery Voltage Too Low

--- Possible Causes --------

- Battery Voltage below 9.6volts

-Suspect Battery state of charge Charging system

===END GEM DTC B1318-20===

===GEM DTC B1316-20===
Code: B1316 - Battery Saver Relay coil circuit short to ground

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

Module: Generic Electronic Module

Diagnostic Trouble Code details

Battery Saver Relay coil circuit short to ground

===END GEM DTC B1316-20===

Any ideas?