diff --git a/CalibCalorimetry/HcalTPGAlgos/interface/HcaluLUTTPGCoder.h b/CalibCalorimetry/HcalTPGAlgos/interface/HcaluLUTTPGCoder.h
index 97766c441a3f6..b935b6cd64118 100644
--- a/CalibCalorimetry/HcalTPGAlgos/interface/HcaluLUTTPGCoder.h
+++ b/CalibCalorimetry/HcalTPGAlgos/interface/HcaluLUTTPGCoder.h
@@ -60,6 +60,7 @@ class HcaluLUTTPGCoder : public HcalTPGCoder {
   void update(const char* filename, bool appendMSB = false);
   void updateXML(const char* filename);
   void setLUTGenerationMode(bool gen) { LUTGenerationMode_ = gen; };
+  void setOverrideFGHF(bool overrideFGHF) { overrideFGHF_ = overrideFGHF; };
   void setFGHFthresholds(const std::vector<uint32_t>& fgthresholds) { FG_HF_thresholds_ = fgthresholds; };
   void setMaskBit(int bit) { bitToMask_ = bit; };
   void setAllLinear(bool linear, double lsb8, double lsb11, double lsb11overlap) {
@@ -114,6 +115,7 @@ class HcaluLUTTPGCoder : public HcalTPGCoder {
   const HcalElectronicsMap* emap_;
   const HcalTimeSlew* delay_;
   bool LUTGenerationMode_;
+  bool overrideFGHF_ = false;
   std::vector<uint32_t> FG_HF_thresholds_;
   int bitToMask_;
   int firstHBEta_, lastHBEta_, nHBEta_, maxDepthHB_, sizeHB_;
diff --git a/CalibCalorimetry/HcalTPGAlgos/src/HcaluLUTTPGCoder.cc b/CalibCalorimetry/HcalTPGAlgos/src/HcaluLUTTPGCoder.cc
index 582098ffd0dd5..9b1594f6118e8 100644
--- a/CalibCalorimetry/HcalTPGAlgos/src/HcaluLUTTPGCoder.cc
+++ b/CalibCalorimetry/HcalTPGAlgos/src/HcaluLUTTPGCoder.cc
@@ -43,6 +43,7 @@ HcaluLUTTPGCoder::HcaluLUTTPGCoder()
       emap_{},
       delay_{},
       LUTGenerationMode_{},
+      overrideFGHF_{},
       FG_HF_thresholds_{},
       bitToMask_{},
       firstHBEta_{},
@@ -81,6 +82,7 @@ void HcaluLUTTPGCoder::init(const HcalTopology* top, const HcalElectronicsMap* e
   emap_ = emap;
   delay_ = delay;
   LUTGenerationMode_ = true;
+  overrideFGHF_ = false;
   FG_HF_thresholds_ = {0, 0};
   bitToMask_ = 0;
   allLinear_ = false;
@@ -381,6 +383,34 @@ void HcaluLUTTPGCoder::update(const HcalDbService& conditions) {
   bool newHBtp = false;
   bool newHEtp = false;
   std::vector<HcalElectronicsId> vIds = emap_->allElectronicsIdTrigger();
+
+  // Access TPParameters to get HF fine-grain thresholds
+  const HcalTPParameters* tpparameters = conditions.getHcalTPParameters();
+
+  // Read thresholds from auxi1 field
+  // aux1: 32-bit auxiliary word. Currently, only the low 16 bits are used (HF MinBias FG thresholds). The high 16 bits are reserved for future use.
+  const uint32_t aux1 = tpparameters->getAuxi1();
+  unsigned fg_hf_lo, fg_hf_hi;
+
+  // The first 16 bits of auxi1 are empty OR the switch is open: Read from configuration parameters
+  const bool zerothresFGHF = (aux1 & 0xFFFFu) == 0u;
+  if (overrideFGHF_ || zerothresFGHF) {
+    fg_hf_lo = FG_HF_thresholds_[0];
+    fg_hf_hi = FG_HF_thresholds_[1];
+  } else {
+    // First 8-bits: low threshold
+    // Second 8-bits: high threshold
+    fg_hf_lo = aux1 & 0xFFu;
+    fg_hf_hi = (aux1 >> 8) & 0xFFu;
+  }
+
+  // Sanity check: low less than high
+  if (fg_hf_hi < fg_hf_lo) {
+    edm::LogError("HcaluLUTTPGCoder")
+        << "ERROR: HF fine-grain thresholds, taken from auxi1 field of HcalTPParameters, are possibly mis-ordered: "
+        << "lower threshold (" << fg_hf_lo << ") > high threshold (" << fg_hf_hi << ").";
+  }
+
   for (std::vector<HcalElectronicsId>::const_iterator eId = vIds.begin(); eId != vIds.end(); eId++) {
     // The first HB or HE id is enough to tell whether to use new scheme in HB or HE
     if (foundHB and foundHE)
@@ -577,9 +607,9 @@ void HcaluLUTTPGCoder::update(const HcalDbService& conditions) {
           else {
             lut[adc] = std::min(
                 std::max(0, int((adc2fC(adc) - ped) * gain * rcalib / lsb_ / cosh_ieta_[cell.ietaAbs()])), MASK);
-            if (adc > FG_HF_thresholds_[0])
+            if (adc > fg_hf_lo)
               lut[adc] |= QIE10_LUT_MSB0;
-            if (adc > FG_HF_thresholds_[1])
+            if (adc > fg_hf_hi)
               lut[adc] |= QIE10_LUT_MSB1;
           }
         }
diff --git a/CalibCalorimetry/HcalTPGEventSetup/src/HcalTPGCoderULUT.cc b/CalibCalorimetry/HcalTPGEventSetup/src/HcalTPGCoderULUT.cc
index 811976266a9a0..17cae15954051 100644
--- a/CalibCalorimetry/HcalTPGEventSetup/src/HcalTPGCoderULUT.cc
+++ b/CalibCalorimetry/HcalTPGEventSetup/src/HcalTPGCoderULUT.cc
@@ -64,6 +64,7 @@ class HcalTPGCoderULUT : public edm::ESProducer {
   bool overrideDBweightsAndFilterHB_, overrideDBweightsAndFilterHE_;
   double linearLSB_QIE8_, linearLSB_QIE11Overlap_, linearLSB_QIE11_;
   int maskBit_;
+  bool overrideFGHF_;
   std::vector<uint32_t> FG_HF_thresholds_;
   edm::FileInPath fgfile_, ifilename_;
 };
@@ -107,6 +108,7 @@ HcalTPGCoderULUT::HcalTPGCoderULUT(const edm::ParameterSet& iConfig) {
     linearLSB_QIE11_ = scales.getParameter<double>("LSBQIE11");
     linearLSB_QIE11Overlap_ = scales.getParameter<double>("LSBQIE11Overlap");
     maskBit_ = iConfig.getParameter<int>("MaskBit");
+    overrideFGHF_ = iConfig.getParameter<bool>("overrideFGHF");
     FG_HF_thresholds_ = iConfig.getParameter<std::vector<uint32_t> >("FG_HF_thresholds");
   } else {
     ifilename_ = iConfig.getParameter<edm::FileInPath>("inputLUTs");
@@ -146,6 +148,7 @@ void HcalTPGCoderULUT::buildCoder(const HcalTopology* topo,
     theCoder->setAllLinear(linearLUTs_, linearLSB_QIE8_, linearLSB_QIE11_, linearLSB_QIE11Overlap_);
     theCoder->setLUTGenerationMode(LUTGenerationMode_);
     theCoder->setMaskBit(maskBit_);
+    theCoder->setOverrideFGHF(overrideFGHF_);
     theCoder->setFGHFthresholds(FG_HF_thresholds_);
   }
 }
diff --git a/SimCalorimetry/HcalTrigPrimProducers/python/hcaltpdigi_cff.py b/SimCalorimetry/HcalTrigPrimProducers/python/hcaltpdigi_cff.py
index cd2ad5300abfd..553b6a2808411 100644
--- a/SimCalorimetry/HcalTrigPrimProducers/python/hcaltpdigi_cff.py
+++ b/SimCalorimetry/HcalTrigPrimProducers/python/hcaltpdigi_cff.py
@@ -24,6 +24,7 @@
     overrideDBweightsAndFilterHE = cms.bool(False),
     tpScales = tpScales,
     MaskBit = cms.int32(0x8000),
+    overrideFGHF = cms.bool(False),
     FG_HF_thresholds = cms.vuint32(17, 255),
     inputLUTs = cms.FileInPath('CalibCalorimetry/HcalTPGAlgos/data/inputLUTcoder_physics.dat'),
     FGLUTs = cms.FileInPath('CalibCalorimetry/HcalTPGAlgos/data/HBHE_FG_LUT.dat'),
diff --git a/SimCalorimetry/HcalTrigPrimProducers/python/hcaltpdigi_cfi.py b/SimCalorimetry/HcalTrigPrimProducers/python/hcaltpdigi_cfi.py
index 18cdfe6d0c270..dc06706992cb3 100644
--- a/SimCalorimetry/HcalTrigPrimProducers/python/hcaltpdigi_cfi.py
+++ b/SimCalorimetry/HcalTrigPrimProducers/python/hcaltpdigi_cfi.py
@@ -46,6 +46,7 @@
 
     latency = cms.int32(1),
     FG_threshold = cms.uint32(12), ## threshold for setting fine grain bit
+    overrideFGHF = cms.bool(False), ## switch: False = read thresholds from TPParameters (default), True = override with FG_HF_thresholds
     FG_HF_thresholds = cms.vuint32(17, 255), ## thresholds for setting fine grain bit
     ZS_threshold = cms.uint32(1),  ## threshold for setting TP zero suppression