[LMP]

Blinking HOLD just tells a code has been sent...
More details about codes below.
My first suspicion would be about the throttle position sensor: this is a variable resistor that can get shorted(wiring), cut (internal) or dirty (looses contact). It has all chances to cause the driving problems you describe.
It can be tested with an ohmeter : reading between two contacts will provide a continuously variable resistance value as you depress throttle. It it has cuts, misses or jumps, it must be replaced. Bad operation contradicts MAF information hence both codes.
The code about acceleration sensor has no consequence on engine operation...but a faulty g sensor would make me worry about accidental air bag deployment....may be this is inhibited by some other cross check...but verify contacts and witing.



122 Throttle Position Snesor
Threshold Value ~ Throttle valve angle < 2.8°
Enable Conditions ~ Engine speed > 720 RPM
Time Requirements ~ Continuous
MIL Illumination ~ 2 driving cycles Related Items
Short to GND between Throttle Position Sensor (TPS) C144-3 and (ECM) C211-73.
Open or short to GND between (TPS) C144-2 and (ECM) C211-59.
Short to GND between (ECM) C211-59 and Chassis Acceleration Sensor (CAS) or Fuel Tank Pressure Sensor (FTPS).
Faulty TPS, CAS or FTPS.


P0101 Mass air flow circuit range/performance problem
Threshold Value ~ Ratio of load value calculated by MAFS and TPS > 1.215 ms or < -2.625 ms.
Enable Conditions ~
Engine speed >1320 RPM
Coolant temperature > 140°F
Time Requirements ~ 5 seconds (continuous)
MIL Illumination ~ 1 driving cycle Related Items
Dirty air cleaner.
Oil Cap or Dipstick missing or not installed correctly.
Air leak in intake system.
Contaminated, deteriorated or damaged MAFS.
Faulty MAFS or Throttle Position Sensor (TPS).
Poor connection(s) (or high resistance in wiring) between ECM and MAFS or TPS.


P1307, P01308 & P01309 Chassis acceleration sensor signal malfunction, low input and high input
Threshold Value ~
P1307 ~ Sensor signal amplitude: >0.34 gravity
P1308 ~ Sensor signal mean value:< -2.49 gravity
P1309 ~ Sensor signal mean value: >2.49 gravity
Enable Conditions ~
P1307 ~ Time after vehicle has come to stop: >15 seconds
Time Requirements ~ Continuous
MIL Illumination ~ 2 driving cycles Related Items
Open between Chassis Acceleration Sensor (CAS) and ECM.
Short to B+ or GND between CAS and ECM.
Faulty CAS.
If a P0501 and/or P1500 code (or pending code) is present, do ALL repairs relating to that code before proceeding with this troubleshooting tree.



P1624 MIL request signal from TCM to ECM
Related Items
This is only a request from TCM to ECM to turn the MIL on. The fault code is stored in the TCM. The Freeze Frame Data is stored in the ECM under the P1624 request code. Be sure to retrieve freeze frame data before clearing code P1624 from ECM.