P2673 — Injection Pump Timing Calibration Not Learned
OBD2 code P2673 flags a problem with the sensor and actuator circuits (injection pump timing calibration not learned). The car is usually drivable while you plan the repair. Common culprits: control module driver fault, faulty sensor or actuator of the affected circuit, open or shorted wiring in the circuit.
powertrain (engine/transmission)
Is it safe to drive?
Short-term driving is OK In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.
How to diagnose with an OBD scanner
- Read the code and freeze frame Connect an OBD2 scanner, confirm P2673 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
- Check for companion codes and TSBs Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
- Inspect wiring and connectors Visually inspect the wiring harness and connectors related to the injection pump timing calibration not learned for damage, corrosion, chafing or poor contact.
- Subsystem check Measure reference voltage, ground and signal continuity at the component connector.
- Subsystem check Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
- Verify the repair Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2673 does not return.
Approximate repair cost
Repair cost depends on which component actually failed. Typical scenarios for P2673 (parts and labor, USD, independent shop rates): Control module repair: $300–$1,000; Replace the faulty sensor or actuator: $150–$500; Repair wiring or connectors: $80–$250. Overall, fixing P2673 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.
Common questions
How do I diagnose P2673 myself?
Start with a scan: confirm P2673, save the freeze frame and note any companion codes. Then inspect the wiring and connectors related to the sensor and actuator circuits, and verify the suspect component against live data before buying parts.
How much does it cost to fix P2673?
Control module repair — $300–$1,000; Replace the faulty sensor or actuator — $150–$500; Repair wiring or connectors — $80–$250. Exact cost depends on the root cause, your vehicle and local labor rates — a proper diagnosis is the cheapest first step.
Will P2673 clear itself?
Sometimes P2673 clears after a few drive cycles if the fault was intermittent — for example a loose connector or a tank of bad fuel. The underlying cause usually remains, so the code tends to return. Clear it once; if it comes back, diagnose rather than erase it repeatedly.
What does OBD2 code P2673 mean?
OBD2 code P2673 flags a problem with the sensor and actuator circuits (injection pump timing calibration not learned). The car is usually drivable while you plan the repair. Common culprits: control module driver fault, faulty sensor or actuator of the affected circuit, open or shorted wiring in the circuit.
What is the most common cause of P2673?
The most common causes are: control module driver fault, faulty sensor or actuator of the affected circuit, open or shorted wiring in the circuit.
What does P2673 mean?
P2673 (Injection Pump Timing Calibration Not Learned) is stored when self-diagnostics detect abnormal readings or behaviour of the sensor and actuator circuits. It belongs to the powertrain (engine/transmission) category.
To set P2673, the control module compares live readings of the sensor and actuator circuits against calibrated limits, usually over several drive cycles. Alongside the code it stores a freeze frame — a snapshot of rpm, load, coolant temperature and vehicle speed at the moment of failure. Reading that snapshot first saves diagnostic time.
What causes P2673?
- poor ground connection
- corroded, loose or damaged connector
- open or shorted wiring in the circuit
- blown fuse feeding the circuit
- faulty sensor or actuator of the affected circuit
Common symptoms of P2673
- the affected system operates intermittently or not at all
- increased fuel consumption in some cases
- Check Engine Light on
- possible limp mode depending on the affected component
How to diagnose P2673
- Connect an OBD2 scanner, confirm P2673 is stored, and save the freeze frame data — it shows engine conditions when the fault was detected.
- Related codes often reveal the real root cause. Also check manufacturer technical service bulletins (TSB) for your make and model — many P0xxx issues have factory fixes or software updates. Search by VIN on the manufacturer site or nhtsa.gov.
- Visually inspect the wiring harness and connectors related to the injection pump timing calibration not learned for damage, corrosion, chafing or poor contact.
- Measure reference voltage, ground and signal continuity at the component connector.
- Wiggle-test the harness while watching the signal in live data — dropouts reveal broken wires.
- Clear the code, complete a full drive cycle including the conditions from the freeze frame, and confirm P2673 does not return.
How to fix P2673
Start with the cheapest and most common causes before replacing expensive parts:
- Control module repair — $300–$1,000
- Replace the faulty sensor or actuator — $150–$500
- Repair wiring or connectors — $80–$250
How much does it cost to fix P2673?
Repair cost depends on which component actually failed. Typical scenarios for P2673 (parts and labor, USD, independent shop rates):
- Control module repair: $300–$1,000
- Replace the faulty sensor or actuator: $150–$500
- Repair wiring or connectors: $80–$250
Overall, fixing P2673 usually costs between $80 and $1,000. An accurate diagnosis before buying parts saves money — the most expensive scenario is rarely the first one to check.
Can you drive with P2673?
In most cases the car remains drivable, possibly with reduced performance or a disabled auxiliary system. If symptoms include stalling, no-start or brake/steering warnings, treat it as urgent.